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How to add two numbers in visual basic

Write a program in vb.internet that can ask the consumer to enter two numbers and compute the sum of that numbers.

Create a GUI (graphical consumer interface) and a console software for this program.

Answer:

We’re going to create two types for this program; gui model and console software.

For gui we shall be utilizing home windows type software and console is making a challenge in a command line software.

We shall be utilizing Microsoft Visible Studio 2010.

Kindly comply with the step-by-step tutorial.

For Home windows Kind Utility

  1. Open your VS2010
  2. Click on File then New Mission
  3. Choose the Visible Primary then Home windows Kind Utility. Click on OK.
  4. We are going to add controls to our type.
    1. 2 labels
    2. 2 textboxes
    3. 1 button

    Code Clarification:

    This system will validate first the enter of the consumer, it would verify if the sector will not be empty or the consumer has entered a numeric worth. This system is not going to compute the sum except the consumer has entered a numeric worth on the 2 textboxes. The sum of two numbers shall be displayed in a message field.

    How to add two numbers in visual basic

    1. Save and Run the challenge.

    For Console Utility

    1. Open you VS2010
    2. Click on File then New Mission
    3. Choose Visible Primary then Console Utility, Click on OK.
    4. The default code you can see is
    1. Paste the code beneath between Sub Fundamental() and Finish Sub

    Code Clarification:

    First is we’re going to declare three variables; firstnum, secondnum and sum all are integer kind. Subsequent is we’re going to ask the consumer to enter the primary variable, this system will learn that consumer enter, identical goes for the second quantity. Lastly is this system will add the 2 numbers and show the outcome.

    Tips on how to write a Visible Primary(VB) program for Addition, Subtraction, Multiplication, and Division of two numbers with examples.

    Addition, Subtraction, Multiplication, and division are essentially the most primary mathematical operation and it may be a greatest follow to study any programming language.

    Let’s see how can we carry out easy mathematical operations in visible primary. Test extra Visible Primary packages for newcomers.

    Visible primary program to Add two numbers

    So as to add two numbers in visible primary is absolutely easy simply use (+) operator. the beneath code will print the sum of two numbers: 30.

    Visible primary program to Subtract two numbers

    To subtract two numbers is visible primary. we will use (-) operator. the beneath code will print Subtraction of two numbers: 10

    Visible primary program to Multiply two numbers

    Use

    operator to multiply two numbers in visible primary. The output of the beneath code shall be Multiplication of two numbers: 200.

    Visible primary program to Divide two numbers

    Use (/) operator to divide two numbers in visible primary. The output of the beneath code shall be Division of two numbers: 2.

    Write a visible primary program to carry out primary mathematical operations.

    Under is the code to carry out primary mathematical operations like Addition, Subtraction, Multiplication, and division in visible primary. On this instance, we’ve two numbers a = 10 and b =5 and we’re going to carry out all mathematical operations on the identical numbers.

    Tips on how to create a calculator in visible primary.

    Under is the code to create a calculator in visible primary. That is the GUI program the place the consumer will enter the quantity within the enter textual content area and the output generates accordingly. Create a calculator software in visible primary.

    Calculator software in visible primary utilizing types

    Write a visible primary program to create a calculator software utilizing types. Create a easy software in visible primary.

    Tips on how to write a Visible Primary(VB) program for Addition, Subtraction, Multiplication, and Division of two numbers with examples.

    Addition, Subtraction, Multiplication, and division are essentially the most primary mathematical operation and it may be a greatest follow to study any programming language.

    Let’s see how can we carry out easy mathematical operations in visible primary. Test extra Visible Primary packages for newcomers.

    Visible primary program to Add two numbers

    So as to add two numbers in visible primary is absolutely easy simply use (+) operator. the beneath code will print the sum of two numbers: 30.

    Visible primary program to Subtract two numbers

    To subtract two numbers is visible primary. we will use (-) operator. the beneath code will print Subtraction of two numbers: 10

    Visible primary program to Multiply two numbers

    Use

    operator to multiply two numbers in visible primary. The output of the beneath code shall be Multiplication of two numbers: 200.

    Visible primary program to Divide two numbers

    Use (/) operator to divide two numbers in visible primary. The output of the beneath code shall be Division of two numbers: 2.

    Write a visible primary program to carry out primary mathematical operations.

    Under is the code to carry out primary mathematical operations like Addition, Subtraction, Multiplication, and division in visible primary. On this instance, we’ve two numbers a = 10 and b =5 and we’re going to carry out all mathematical operations on the identical numbers.

    Tips on how to create a calculator in visible primary.

    Under is the code to create a calculator in visible primary. That is the GUI program the place the consumer will enter the quantity within the enter textual content area and the output generates accordingly. Create a calculator software in visible primary.

    Calculator software in visible primary utilizing types

    Write a visible primary program to create a calculator software utilizing types. Create a easy software in visible primary.

    Tips on how to add, subtract, multiply and divide 2 totally different numbers from 2 totally different type. Pls assist me. The code i believe is approach too easy instance: (Consequence.textual content = outcome) (Text1.textual content = quantity from form2)(Text2,textual content = Quantity from form3). the code i believe is like this and this one will not be working:

    Public Sub Command1_Clicked()
    Consequence.textual content = Val(Text1.Textual content) + Val(Text2.textual content)
    Finish Sub

    Pls assist me. i cant sleep due to this drawback.

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    Really helpful Solutions

    Tips on how to add, subtract, multiply and divide 2 totally different numbers from 2 totally different type. Pls assist me. The code i believe is approach too easy instance: (Consequence.textual content = outcome) (Text1.textual content = quantity from form2)(Text2,textual content = Quantity from form3). the code i believe is like this and this one will not be …

    There isn’t any error within the code, For future reference please learn the Daniweb Posting Guidelines. Notably the half about hijacking outdated threds.

    All 6 Replies

    Tips on how to add, subtract, multiply and divide 2 totally different numbers from 2 totally different type. Pls assist me. The code i believe is approach too easy instance: (Consequence.textual content = outcome) (Text1.textual content = quantity from form2)(Text2,textual content = Quantity from form3). the code i believe is like this and this one will not be working:

    Public Sub Command1_Clicked()
    Consequence.textual content = Val(Text1.Textual content) + Val(Text2.textual content)
    Finish Sub

    Pls assist me. i cant sleep due to this drawback.

    Thank You Very A lot.

    Can I have the ability to write a easy program to simply accept two numbers in a single textbox together with an operator +,-,/,*, utilizing vb 2010

    Can I have the ability to write a easy program to simply accept two numbers in a single textbox together with an operator +,-,/,*, utilizing vb 2010

    sure , it may be written and actually its very simple to attain , you simply must put 2 textboxes and 1 command button and make use of arithmetic operators.

    it’s also possible to settle for these numbers utilizing inputbox.

    for additional help , i extremely advocate you to submit the query in acceptable thread , we’ve seperate discussion board for vb.internet.

    pls anybody inform me what’s the error on this code for (n=a1-a3)

    Dim a1, a2, a3, a4, x, n As Integer
    Non-public Sub Command1_Click()
    a1 = Val(Text1.Textual content)
    a2 = Val(Text2.Textual content)
    a3 = Val(Text3.Textual content)
    a4 = Val(Text4.Textual content)
    x = a3 + a2 – a4
    n = a1 – a3
    Text5.Textual content = x
    Text6.Textual content = n
    Finish Sub

    Provides two numbers or returns the constructive worth of a numeric expression. Will also be used to concatenate two string expressions.

    Syntax

    Elements

    Time period Definition
    expression1 Required. Any numeric or string expression.
    expression2 Required except the + operator is calculating a detrimental worth. Any numeric or string expression.

    Consequence

    If expression1 and expression2 are each numeric, the result’s their arithmetic sum.

    If expression2 is absent, the + operator is the unary identification operator for the unchanged worth of an expression. On this sense, the operation consists of retaining the signal of expression1 , so the result’s detrimental if expression1 is detrimental.

    If expression1 and expression2 are each strings, the result’s the concatenation of their values.

    If expression1 and expression2 are of blended sorts, the motion taken relies on their sorts, their contents, and the setting of the Possibility Strict Assertion. For extra data, see the tables in "Remarks."

    Supported Sorts

    All numeric sorts, together with the unsigned and floating-point sorts and Decimal , and String .

    Remarks

    Basically, + performs arithmetic addition when potential, and concatenates solely when each expressions are strings.

    If neither expression is an Object , Visible Primary takes the next actions.

    If Possibility Strict is Off , then implicitly convert the String to Double and add.

    If one expression is an Object expression, Visible Primary takes the next actions.

    If Possibility Strict is Off , then implicitly convert the String to Double and add.

    If Possibility Strict is Off , then implicitly convert the string Object to Double and add.

    If each expressions are Object expressions, Visible Primary takes the next actions ( Possibility Strict Off solely).

    If both Object expression evaluates to Nothing or DBNull, the + operator treats it as a String with a worth of "".

    Whenever you use the + operator, you won’t have the ability to decide whether or not addition or string concatenation will happen. Use the & operator for concatenation to eradicate ambiguity and to offer self-documenting code.

    Overloading

    The + operator may be overloaded, which signifies that a category or construction can redefine its habits when an operand has the kind of that class or construction. In case your code makes use of this operator on such a category or construction, be certain you perceive its redefined habits. For extra data, see Operator Procedures.

    Instance

    The next instance makes use of the + operator so as to add numbers. If the operands are each numeric, Visible Primary computes the arithmetic outcome. The arithmetic outcome represents the sum of the 2 operands.

    You too can use the + operator to concatenate strings. If the operands are each strings, Visible Primary concatenates them. The concatenation outcome represents a single string consisting of the contents of the 2 operands one after the opposite.

    If the operands are of blended sorts, the outcome relies on the setting of the Possibility Strict Assertion. The next instance illustrates the outcome when Possibility Strict is On .

    The next instance illustrates the outcome when Possibility Strict is Off .

    To eradicate ambiguity, it is best to use the & operator as a substitute of + for concatenation.

    Within the seventh a part of this tutorial, you will add multiplication and division issues, however first take into consideration tips on how to make that change. Think about the preliminary step, which includes storing values.

    This matter is a part of a tutorial collection about primary coding ideas. For an outline of the tutorial, see Tutorial 2: Create a timed math quiz.

    So as to add multiplication and division issues

    Add 4 extra integer variables to the shape.

    Use the programming language management on the high proper of this web page to view both the C# code snippet or the Visible Primary code snippet.

    How to add two numbers in visual basic

    As you probably did earlier than, modify the StartTheQuiz() technique to fill in random numbers for the multiplication and division issues.

    Modify the CheckTheAnswer() technique in order that it additionally checks the multiplication and division issues.

    You possibly can’t simply enter the multiplication signal (×) and the division signal (÷) utilizing the keyboard, so C# and Visible Primary settle for an asterisk

    for multiplication and a slash mark (/) for division.

    Change the final a part of the timer’s Tick occasion handler in order that it fills within the right reply when time runs out.

    Save and run your program.

    Quiz takers should reply 4 issues to finish the quiz, as the next illustration exhibits.

    How to add two numbers in visual basic
    Math quiz with 4 issues

    To proceed or assessment

    To go to the following tutorial step, see Step 8: Customise the quiz.

    To return to the earlier tutorial step, see Step 6: Add a subtraction drawback.

    outcome
    Required. Any numeric variable or property.

    number1
    Required. Any numeric expression.

    number2
    Required. Any numeric expression.

    Supported sorts

    All numeric sorts. This contains the unsigned and floating-point sorts and Decimal .

    Consequence

    The result’s the rest after number1 is split by number2 . For instance, the expression 14 Mod Four evaluates to 2.

    There’s a distinction between the rest and modulus in arithmetic, with totally different outcomes for detrimental numbers. The Mod operator in Visible Primary, the .NET Framework op_Modulus operator, and the underlying rem IL instruction all carry out a the rest operation.

    The results of a Mod operation retains the signal of the dividend, number1 , and so it could be constructive or detrimental. The result’s all the time within the vary (- number2 , number2 ), unique. For instance:

    Remarks

    If both number1 or number2 is a floating-point worth, the floating-point the rest of the division is returned. The info kind of the result’s the smallest information kind that may maintain all potential values that outcome from division with the information varieties of number1 and number2 .

    If number1 or number2 evaluates to Nothing, it’s handled as zero.

    Associated operators embrace the next:

    The Operator (Visible Primary) returns the integer quotient of a division. For instance, the expression 14 Four evaluates to three.

    The / Operator (Visible Primary) returns the total quotient, together with the rest, as a floating-point quantity. For instance, the expression 14 / Four evaluates to three.5.

    Tried division by zero

    If number2 evaluates to zero, the habits of the Mod operator relies on the information kind of the operands:

    • An integral division throws a DivideByZeroException exception if number2 can’t be decided in compile-time and generates a compile-time error BC30542 Division by zero occurred whereas evaluating this expression if number2 is evaluated to zero at compile-time.
    • A floating-point division returns Double.NaN.

    Equal method

    The expression a Mod b is equal to both of the next formulation:

    Floating-point imprecision

    Whenever you work with floating-point numbers, keep in mind that they don’t all the time have a exact decimal illustration in reminiscence. This may result in sudden outcomes from sure operations, resembling worth comparability and the Mod operator. For extra data, see Troubleshooting Information Sorts.

    Overloading

    The Mod operator may be overloaded, which signifies that a category or construction can redefine its habits. In case your code applies Mod to an occasion of a category or construction that features such an overload, be certain you perceive its redefined habits. For extra data, see Operator Procedures.

    Instance 1

    The next instance makes use of the Mod operator to divide two numbers and return solely the rest. If both quantity is a floating-point quantity, the result’s a floating-point quantity that represents the rest.

    Instance 2

    The next instance demonstrates the potential imprecision of floating-point operands. Within the first assertion, the operands are Double , and 0.2 is an infinitely repeating binary fraction with a saved worth of 0.20000000000000001. Within the second assertion, the literal kind character D forces each operands to Decimal , and 0.2 has a exact illustration.

    How to add two numbers in visual basic

    Calculating the sum of three numbers can simply be completed utilizing a Home windows Varieties Mission in Visible Primary. One of the best factor to do is to let the consumer enter the three numbers utilizing textual content bins then you will get the values programmatically. In VB, you need to use the “+” operator so as to add numbers and save the outcome to a variable. The operator can be utilized so as to add two or extra numbers.

    Launch Microsoft Visible Primary Categorical and click on “New Mission” on the left pane of your pc display. Click on “Visible Primary” beneath Put in Templates, then click on “Home windows Varieties Utility,” after which click on “OK” to begin a brand new challenge.

    Double-click the “TextBox” management on the “Toolbox” pane so as to add one to your type. Add two extra textual content bins and a “Button” utilizing the identical method.

    Double-click the button to create a button click on occasion. Add the next code to create your variables:

    Dim firstNum As Integer

    Dim secondNum As Integer
    Dim thirdNum As Integer

    Dim outcome As Integer

    Get the numbers entered within the textual content bins.

    firstNum = Convert.ToInt32(Me.TextBox1.Textual content)
    secondNum = Convert.ToInt32(Me.TextBox2.Textual content)

    Calculate the sum of the numbers.

    outcome = firstNum + secondNum + thirdNum
    Show the calculated outcome.

    On this a part of the tutorial, you’ll study Visible Primary procedures & features.

    We use procedures and features to create modular packages. Visible Primary statements are grouped in a block enclosed by Sub , Operate and matching Finish statements. The distinction between the 2 is that features return values, procedures don’t.

    A process and performance is a bit of code in a bigger program. They carry out a particular job. The benefits of utilizing procedures and features are:

    • Lowering duplication of code
    • Decomposing advanced issues into easier items
    • Bettering readability of the code
    • Reuse of code
    • Info hiding

    Procedures

    A process is a block of Visible Primary statements inside Sub , Finish Sub statements. Procedures don’t return values.

    This instance exhibits primary utilization of procedures. In our program, we’ve two procedures. The Fundamental() process and the consumer outlined SimpleProcedure() . As we already know, the Fundamental() process is the entry level of a Visible Primary program.

    Every process has a reputation. Contained in the Fundamental() process, we name our consumer outlined SimpleProcedure() process.

    Procedures are outlined exterior the Fundamental() process. Process title follows the Sub assertion. Once we name a process contained in the Visible Primary program, the management is given to that process. Statements contained in the block of the process are executed.

    Procedures can take non-obligatory parameters.

    Within the above instance, we move some values to the Addition() process.

    Right here we name the Addition() process and move two parameters to it. These parameters are two Integer values.

    We outline a process signature. A process signature is a approach of describing the parameters and parameter sorts with which a authorized name to the perform may be made. It accommodates the title of the process, its parameters and their kind, and in case of features additionally the return worth. The ByVal key phrase specifies how we move the values to the process. In our case, the process obtains two numerical values, 55 and 32. These numbers are added and the result’s printed to the console.

    Features

    A perform is a block of Visible Primary statements inside Operate , Finish Operate statements. Features return values.

    There are two primary varieties of features. Constructed-in features and consumer outlined ones. The built-in features are a part of the Visible Primary language. There are numerous mathematical, string or conversion features.

    Within the previous instance, we use two math features and one string perform. Constructed-in features assist programmers do some widespread duties.

    Within the following instance, we’ve a consumer outlined perform.

    Two values are handed to the perform. We add these two values and return the outcome to the Fundamental() perform.

    Addition perform is named. The perform returns a outcome and this result’s assigned to the outcome variable.

    That is the Addition perform signature and its physique. It additionally features a return information kind, for the returned worth. In our case is is an Integer . Values are returned to the caller with the Return key phrase.

    Passing parameters by worth, by reference

    Visible Primary helps two methods of passing parameters to features. By worth and by reference. For this, we’ve two key phrases. ByVal and ByRef . Once we move arguments by worth, the perform works solely with the copies of the values. This may increasingly result in efficiency overheads, after we work with massive quantities of knowledge.

    Once we move values by reference, the perform receives a reference to the precise values. The unique values are affected, when modified. This fashion of passing values is extra time and house environment friendly. Alternatively, it’s extra error susceptible.

    Which approach of passing arguments ought to we use? It relies on the scenario. Say we’ve a set of knowledge, salaries of workers. If we wish to compute some statistics of the information, we don’t want to switch them. We move by values. If we work with massive quantities of knowledge and the pace of computation is vital, we move by reference. If we wish to modify the information, e.g. do some reductions or raises to the salaries, we’d move by reference.

    The next two examples cowl each ideas.

    The Swap() process swaps the numbers between the a and b variables. The unique variables are usually not affected.

    At first, these two variables are initiated.

    We name the Swap() process. The process takes a and b variables as parameters.

    Contained in the Swap() process, we alter the values. Observe that the a and b variables are outlined domestically. They’re legitimate solely contained in the Swap() process.

    The output exhibits that the unique variables weren’t affected.

    The following code instance passes values to the perform by reference. The unique variables are modified contained in the Swap() process.

    On this instance, calling the Swap() process will change the unique values.

    Now we use the ByRef key phrase to point that we move parameters by reference.

    Right here we see that the Swap() process actually modified the values of the variables.

    Recursion

    Recursion, in arithmetic and pc science, is a technique of defining features during which the perform being outlined is utilized inside its personal definition. In different phrases, a recursive perform calls itself to do its job. Recursion is a extensively used method to unravel many programming duties.

    A typical instance is calculation of the factorial.

    On this code instance, we calculate the factorial of two numbers.

    Contained in the physique of the factorial perform, we name the factorial perform with a modified argument. The perform calls itself.

    These are the outcomes.

    Module scope, process scope

    A scope is the vary during which a variable may be referenced. A variable which is asserted contained in the process has a process scope. It’s legitimate solely on this explicit process. A variable declared inside a module has a module scope. It’s legitimate in all places within the module.

    Within the previous instance, we declare two variables. Variable a has the module scope, variable b has the process scope.

    Variable a is asserted contained in the Instance module, exterior the 2 procedures. It’s legitimate in each procedures.

    The variable b is asserted within the Fundamental() process. It’s legitimate solely there. It isn’t legitimate within the second process.

    The assertion printing the b variable is commented. If we uncommented the road, the instance wouldn’t compile.

    Within the previous instance, we’ve declared a variable with the identical title in two totally different scopes. They don’t collide. The variable declared contained in the Fundamental() process overrides the one, declared within the module scope.

    Static variables

    A static variable is a variable that has been allotted statically, whose lifetime extends throughout the whole run of this system. (Wikipedia) The default, native variables don’t retain their worth inside consecutive calls of the perform.

    Within the above instance, we’ve a traditional, non-static variable. We increment the variable every time the perform is named. We name the perform 5 occasions. Nevertheless, non-static variables are initiated for every name of the perform.

    After 5 perform calls the x variable equals to 1.

    The static variables are initiated solely as soon as, when the perform is first referred to as. They preserve their worth afterwards.

    After 5 consecutive calls, the x is the same as 5.

    Static variables are created with the Static key phrase.

    Operating the instance.

    On this a part of the Visible Primary tutorial, we coated procedures and features.

    Line numbers!? Yup, identical to these utilized in “actual” Primary. Bear with me here-I will persuade you!

    In older variations of Primary, line numbers had been obligatory and sometimes used as “soar targets.” A soar goal is a line quantity used with a GoTo, resembling GoTo 2000. The 2000 identifies the beginning of a block of code to execute subsequent. After GoTo got here GoSub (and Return). Now you had a “Primary subroutine,” albeit one with an odd title: GoSub 2000. You possibly can consider the (line) quantity virtually as an tackle (simply as in C). Nowadays, after all, Primary is Visible Primary and we use symbolic names for labeling such soar targets (actual subroutines, identical to these in C and different programming languages). Line numbers have grow to be a peculiarity designed to permit nothing greater than some stage of backward compatibility with another model of Primary.

    Or then once more, perhaps not. In Visible Primary, Erl, a Visible Primary (undocumented in Visible Primary 4, 5, and 6 however current in all variations of Visible Primary so far) “world variable,” offers you entry to the road variety of any erroring line of code. So by utilizing line numbers and by utilizing Erl in your error handlers, you may decide which line of code erred-wow! What occurs to Erl if you happen to do not use line numbers? Simple-it will all the time be 0.

    In fact, you will not wish to begin typing line numbers in by hand. You want some automation. At TMS, we add line numbers to our code utilizing an inner software we initially developed for working with Visible Primary 2. It now works as an add-in underneath Visible Primary 6. There are instruments in the marketplace that may do the identical in your code.

    At TMS, we do not work with line numbers in our supply code, nonetheless. We add them solely after we’re doing a ship build-that is, after we wish to ship a binary to, say, beta testers or to manufacturing for an impending launch. We use our inner software to construct a brand new model of the code, full with line numbers, after which we make an executable from that. We retailer the road numbered supply code in our supply management system and ship the executable. We cross-reference the EXE model quantity (the Auto Increment possibility is simply nice right here) to the supply code saved within the supply management system. Each time we do a brand new construct for delivery, we create a brand new subproject whose title is the model variety of the construct after which retailer the road numbered supply code in it together with a replica of the binary picture. If an error report is available in, we will simply refer again to the supply code to search out the erroring line (very simple if you happen to’re utilizing Microsoft Visible SourceSafe). Usually, the error report will include particulars of the module, routine, and line variety of the error.

    Itemizing 1-2 is a typical Click on occasion, line numbers and all.

    Discover in Itemizing 1-2 that sProcSig is made up of the module title (Form1) and the routine title (Command1_Click). Discover additionally that the error handler examines Erl to “see” whether or not line numbers have been used. Determine 1-1 exhibits what’s usually displayed when an error happens utilizing this sort of scheme.

    Determine 1-1 Error and line quantity data

    In fact, the precise code that makes up the error handler is completely as much as you. When you use this scheme, I like to recommend you have got a module-level fixed to carry your module title and use a routine-level fixed to carry the routine title plus the module title: