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C++ Program to Make a Simple Calculator Using Switch Case Statement

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In this C++ program tutorial, we will write a code on how to make a simple calculator using switch statement in C++ or in other words create a simple calculator to add, subtract, multiply and divide using switch and break statement.

In order to understand the program you need to know about the following topics in C++:

C++ Program to Make a Simple Calculator Using Switch Case Statement

# include <iostream>
using namespace std;

int main() 
{
    char op;
    float num1, num2;

    cout << "Choose the operator to perform: +, -, *, / : ";
    cin >> op;

    cout << "\nEnter the First Number: ";
    cin >> num1;
    cout << "Enter the Second Number: ";
    cin >> num2;

    switch(op) 
    {
        case '+':
            cout << num1 << " + " << num2 << " = " << num1 + num2;
            break;

        case '-':
            cout << num1 << " - " << num2 << " = " << num1 - num2;
            break;

        case '*':
            cout << num1 << " * " << num2 << " = " << num1 * num2;
            break;

        case '/':
            cout << num1 << " / " << num2 << " = " << num1 / num2;
            break;

        default:
            // If chose other than the given options
            cout << "Error! Operation not supported";
            break;
    }

    return 0;
}

Output:

Choose the operator to perform: +, -, *, / : +
Enter the First Number: 20
Enter the Second Number: 30
20 + 30 = 50

Choose the operator to perform: +, -, *, / : *
Enter the First Number: 5
Enter the Second Number: 12
5 * 12 = 60

Choose the operator to perform: +, -, *, / : &
Enter the First Number: 12
Enter the Second Number: 52
Error! Operation not supported

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