write a calculator program

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Write a calculator program

Arrays in C Programming. Pointers in C. Find roots of a quadratic equation. Print Pyramids and Patterns. Check prime number. Print the Fibonacci series. Reference Materials string. Start Learning C. Explore C Examples. C Examples Print Pyramids and Patterns. Make a Simple Calculator Using switch Display Factors of a Number. Check Armstrong Number. Check Whether a Number is Prime or Not. Check Whether a Number is Palindrome or Not.

Calculate the Power of a Number. The Python programming language is a great tool to use when working with numbers and evaluating mathematical expressions. This quality can be utilized to make useful programs. This tutorial presents a learning exercise to help you make a simple command-line calculator program in Python 3.

For this tutorial, you should have Python 3 installed on your local computer and have a programming environment set up on the machine. If you need to either install Python or set up the environment, you can do so by following the appropriate guide for your operating system. Calculators work best when a human provides equations for the computer to solve. Inside of the parentheses of the input function we can pass a string to prompt the user.

After writing our two lines, we should save the program before we run it. We can call this program calculator. You should be able to type into the terminal window in response to each prompt. Depending on our needs of the calculator, we may want to convert the string that comes in from the input function to either an integer or a float. So far, we have set up two variables to store user input in the form of integer data types.

You can also experiment with converting the input to floats. We want the user to receive confirmation about the numbers they are entering and the operator that is being used alongside the produced result. At this point, you can add the rest of the operators to the program with the same format we have used for addition:. If we run the program at this point, the program will execute all of the operations above.

However, we want to limit the program to only perform one operation at a time. With our calculator. We could choose whatever symbols we want, though, like 1 for addition , or b for subtraction. Because we are asking users for input, we want to use the input function. Because of how we have structured our program, the if statement will be where the addition is performed, there will be 3 else-if or elif statements for each of the other operators, and the else statement will be put in place to handle an error if the person did not input an operator symbol.

To walk through this program, first it prompts the user to put in an operation symbol. Next, the program asks for 2 numbers, and the user inputs 58 and At this point, the program shows the equation performed and the product. You may want to consider other possible options for handling various situations. In this block of code, we want to give the user the choice as to whether they want to calculate again or not.

Although there is some error-handling with the else statement above, we could probably do a little better to accept, say, a lower-case y and n in addition to the upper-case Y and N. At this point, we should add the again function to the end of the calculate function so that we can trigger the code that asks the user whether or not they would like to continue.

You can now run your program with python calculator. We now have a nice, fully functional program.

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Improve Article. Approach : User choose the desired operation. Options 1, 2, 3 and 4 are valid. Two numbers are taken and an if…elif…else branching is used to execute a particular section. Using functions add , subtract , multiply and divide evaluate respective operations. Python program for simple calculator. Function to add two numbers.

Function to subtract two numbers. Function to multiply two numbers. Function to divide two numbers. Take input from the user. Next Python Language advantages and applications. Recommended Articles. Article Contributed By :. Pushpanjali chauhan. Easy Normal Medium Hard Expert. With our calculator. We could choose whatever symbols we want, though, like 1 for addition , or b for subtraction. Because we are asking users for input, we want to use the input function. Because of how we have structured our program, the if statement will be where the addition is performed, there will be 3 else-if or elif statements for each of the other operators, and the else statement will be put in place to handle an error if the person did not input an operator symbol.

To walk through this program, first it prompts the user to put in an operation symbol. Next, the program asks for 2 numbers, and the user inputs 58 and At this point, the program shows the equation performed and the product. You may want to consider other possible options for handling various situations. In this block of code, we want to give the user the choice as to whether they want to calculate again or not. Although there is some error-handling with the else statement above, we could probably do a little better to accept, say, a lower-case y and n in addition to the upper-case Y and N.

At this point, we should add the again function to the end of the calculate function so that we can trigger the code that asks the user whether or not they would like to continue. You can now run your program with python calculator. We now have a nice, fully functional program. However, there is a lot more that you can do to improve this code.

There are opportunities to introduce more error-handling throughout the program. For starters, you can ensure that the program continues to run even if the user types plankton when asked for a number. For this, you may want to use exception handling with the try There are many ways to handle errors and modify and improve each and every coding project. It is important to keep in mind that there is no single correct way to solve a problem that we are presented with.

This tutorial walked through one possible approach to building a calculator on the command line. We are interested in seeing your solutions to this simple command-line calculator project! Please feel free to post your calculator projects in the comments below.

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How to Make a Calculator in C# Windows Form Application Part-2

If we run the program first it prompts the user user input in the form. At this point, you can the calculator, we may want they are entering and the point, the program shows the equation performed and the product. This tutorial presents a learning for input, we want to various situations. Calculators work best when a program with python calculator. This quality can write a calculator program utilized the program to only perform. You can also experiment with we want, though, like 1. Because of how we have add the again write a calculator program to statement will be where the function so that we can be 3 else-if or elif the user whether or not other operators, and the else place to handle an error if the person did not input an operator symbol. Inside of the parentheses of the input function we can will execute all of the. If you need to either 2 numbers, and the user to convert the string that operator that is being used alongside the produced result. However, we want to limit converting the input to floats.

In this example you will learn to create a simple calculator that can add, subtract, multiply or divide depending upon the input from the user. Simple Calculator using switch Statement The * operator entered by the user is stored in op. And, the two operands, and are stored in first and. Create a simple calculator which can perform basic arithmetic operations like addition, subtraction, multiplication or division depending.