C-Language-Programs/calculator.c at main · LS1212-dec/C-Language-Programs · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
#include <stdio.h>

int main() {
    char operator;
    double num1, num2, result;

    printf("Welcome to the Calculator App!\n");
    printf("Enter an operator (+, -, *, /): ");
    scanf(" %c", &operator);

    printf("Enter first number: ");
    scanf("%lf", &num1);

    printf("Enter second number: ");
    scanf("%lf", &num2);

    switch(operator) {
        case '+':
            result = num1 + num2;
            printf("Result: %.2lf\n", result);
            break;
        case '-':
            result = num1 - num2;
            printf("Result: %.2lf\n", result);
            break;
        case '*':
            result = num1 * num2;
            printf("Result: %.2lf\n", result);
            break;
        case '/':
            if(num2 != 0) {
                result = num1 / num2;
                printf("Result: %.2lf\n", result);
            } else {
                printf("Error: Division by zero is not allowed.\n");
            }
            break;
        default:
            printf("Error: Invalid operator.\n");
    }

    return 0;
}