switch Statement

switch (expression) {
    case value1:
        // code here
        break;       // exit switch
    case value2:
        // code here
        break;
    default:         // runs if no case matches
        // code here
}

#include <stdio.h>

int main() {
    float a, b;
    char  op;
    
    printf("Enter: number op number (e.g. 10 + 5): ");
    scanf("%f %c %f", &a, &op, &b);
    
    printf("%.2f %c %.2f = ", a, op, b);
    
    switch (op) {
        case '+': printf("%.2f\n", a + b); break;
        case '-': printf("%.2f\n", a - b); break;
        case '*': printf("%.2f\n", a * b); break;
        case '/':
            if (b != 0)  printf("%.2f\n", a / b);
            else         printf("Error: Division by zero!\n");
            break;
        default:
            printf("Unknown operator!\n");
    }
    return 0;
}