56. Function Pointer Dispatch Table

#include <stdio.h>

int add(int a, int b) { return a + b; }
int sub(int a, int b) { return a - b; }
int mul(int a, int b) { return a * b; }
int divide(int a, int b) { return a / b; }

int execute_command(int a, int b, int cmd) {
    // Your logic here using function pointer array
    int (*ap)(int, int) = add;
    int (*sp)(int, int) = sub;
    int (*mp)(int, int) = mul;
    int (*dp)(int, int) = divide;

    int arr[5] = {ap(a,b),sp(a,b),mp(a,b),dp(a,b)};
    return arr[cmd];
}

int main() {
    int a, b, cmd;
    scanf("%d %d %d", &a, &b, &cmd);

    int result = execute_command(a, b, cmd);
    printf("%d", result);

    return 0;
}

Solving Approach