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CSE 102 - 01_2 : Basic Calculator In C Using Switch

Source Code: 


#include <stdio.h>

int main()
{

    char c;
    double a,b;

    printf("Operation signs:\n\tFor Addition\t\t: \tPress '+'\n\tFor subtraction \t: \tPress '-'\n\tFor multiplication \t: \tPress '*'\n\tFor division\t\t: \tPress '/' \n\nSelect an operation:\n");
    scanf("%c",&c);
    printf("Enter a number:\n");
    scanf("%lf",&a);
    printf("Enter another number: \n");
    scanf("%lf",&b);

    switch(c)
    {
        case '+':
            printf("%.1lf + %.1lf = %.1lf",a, b, a + b);
            break;

        case '-':
            printf("%.1lf - %.1lf = %.1lf",a, b, a - b);
            break;

        case '*':
            printf("%.1lf * %.1lf = %.1lf",a, b, a * b);
            break;

        case '/':
            printf("%.1lf / %.1lf = %.1lf",a,b, a/b);
            break;

        default:
            printf("Error!");
    }

    return 0;
}

Sample Input-Output:


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