Hacktoberfest-2024-Java/Simple_Calculator.c at main · AdeeSL/Hacktoberfest-2024-Java · GitHub

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#include <stdio.h>
#include <stdlib.h>

int main()
{
    char ch;
    double a, b;
    while (1) {
        printf("Enter an operator (+, -, *, /), if want to exit press x: ");
        scanf(" %c", &ch);

        if (ch == 'x')
            exit(0);
        printf("Enter two first and second operand: ");
        scanf("%lf %lf",&a,&b);

        switch (ch) {

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

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

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

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

        default:
            printf("Error! please write a valid operator\n");
        }
    }
}