{"post":"

Program to make basic calculator

This can be done by simply using the switch case where the cases will be the operators (+,-,*,/).

Algorithm

Prompt the user to enter two operands on which to perform the operation.
Prompt the user to enter the operator to use.
Use a switch statement to check if the operator matches any of the cases ('+', '-', '*', '/'). If the operator does not match any of these cases, display an error message.
If the operator does match one of the cases, perform the corresponding operation on the operands and print the result.

Code

// C++ program to create calculator\n#include <iostream>\nusing namespace std;\n\n// Main program\nint main() {\n    char oper;\n    float a, b;\n\n    // It allow user to enter the operands\n    cout << \"Enter two operands: \";\n    cin >> a >> b;\n\n    // It allows user to enter operator i.e. +, -, *, /\n    cout << \"Enter operator: \";\n    cin >> oper;\n\n    // Switch statement begins\n    switch (oper) {\n        // If operator is '+'\n        case '+':\n            cout << a + b;\n            break;\n        // If operator is '-'\n        case '-':\n            cout << a - b;\n            break;\n        // If operator is '*'\n        case '*':\n            cout << a * b;\n            break;\n        // If operator is '/'\n        case '/':\n            cout << a / b;\n            break;\n        // If any other operator display error message\n        default:\n            cout << \"Error! Incorrect operator\";\n            break;\n    }\n    return 0;\n}\n\n

Output

Input:\nEnter two operands: 10 20\nEnter operator: *\n\nOutput:\n200\n\n

\n","title":"Calculator Program in C++","authorDetails":{"name":"Prabhnoor Maingi","slug":"prabhnoor-maingi"},"description":"Learn how to create a calculator program in C++ that can perform addition, subtraction, multiplication, and division. Get step-by-step instructions and examples for how to use the C++ programming language to build a simple calculator. ","slug":"cpp/examples/program-to-make-basic-calculator-in-c/","articleId":"636a83447bb1ce5072622b6a","bookmarkStatus":{"isBookmarked":false,"bookmarkId":null}}