Calculator Program with Batch Scripting in Windows Last Updated : 07 Sep, 2020 Comments Improve Suggest changes Like Article Like Report By using the Batch Scripting of command prompt one could even design a normal basic calculator that takes expressions and returns the result. Type the following script in notepad or any other text editor software: @echo off :a echo ________Calculator________ echo. set /p expression= Enter expression to calculate: set /a ans=%expression% echo. echo = %ans% echo pause cls goto a After writing the above text in a text editor, save the file with the extension " .bat ". To run the program, simply double-click on the saved file, the program will open and the code will get executed in Command Prompt. It should look something like: Welcome screen!Code Explanation and Test Cases:@echo off — signals Command Prompt to not display the commands (code).: a — the signals starting point of a loop.echo — same as print/println/printf/etc. Displays the specified message as output to the screen.echo. — will output a blank line.set — used to set value against a variable.set /p expression — /p signals that this is prompt. "Expression" is just a variable name.set /a ans - /a signal that variable has a numerical value. "ans" is the variable name.%ans% — calls the variable "ans"pause — will pause/ stop the program flow until the user will press a key (any key) and continue the program flow only when the users press a key (any).cls - clears the screengoto a- signals to go to the start point of the loop, effectively looping our calculator program so it can take in and calculate new expression. Program Test Cases: The program can handle simple expression calculations like:Calculating Simple ExpressionAnd it can also handle complex expressions, such as:Calculating Complex Expression Note:- The above program is calculating expressions by utilizing the calculator (that can perform simple arithmetic on 32-bit signed integers) that comes with Command Prompt.Since we are utilizing built-in calculator of Command Prompt, we can only perform following expression: + (addition), - (subtraction), * (multiplication), / (divide), % (modulo). Comment More infoAdvertise with us Next Article Leap Year Program with Bash Shell Scripting in Windows _Krish Follow Improve Article Tags : Linux-Unix Similar Reads Leap Year Program with Bash Shell Scripting in Windows Accurately the Earth has 365.24 days per year, to correct the approximation and keep track of the Solar Calendar the idea of leap year has been introduced to Gregorian Calendar. A leap year comes once every four years. In contrast, it has 366 days with regular years, having 365 days. Mathematical ap 1 min read Simple Calculator in Bash Create a simple calculator which can perform basic arithmetic operations like addition, subtraction, multiplication or division depending upon the user input in Bash. Example: Enter two numbers: 5.6 3.4 Enter Choice: 1. Addition 2. Subtraction 3. Multiplication 4. Division 3 5.6 * 3.4 = 19.0 Approac 2 min read Batch Script - Printing / NETPrint Command A Bash script is similar to a simple text file that contains a number of commands that the programmer can write in a command line. In Unix-based systems, these commands are used for performing repetitive tasks. A Bash script consists of a bunch of commands, or it may contain elements like loops, fun 3 min read Batch Script - String Concatenation String Concatenation is combining two or more strings to create a new string. For instance, let a string "Good" and take another string "Morning" now by string concatenation i.e. "Good" + "Morning" and we got new string i.e. "Good Morning". This is string concatenation. Let see some examples of stri 2 min read batch command in Linux with Examples batch command is used to read commands from standard input or a specified file and execute them when system load levels permit i.e. when the load average drops below 1.5. Syntax: batch It is important to note that batch does not accepts any parameters. Other Similar Commands: atq: Used to display th 1 min read Batch Script - Working with Environment Variables Environment Variables refer to the variables which are globally declared and can be accessed by the processor under the management of OS like Windows, Mac, and Linux. In starting they were meant to store the path locations but now they also work with Batch Script. The data of batch programs like inp 2 min read Like