Function Pointer Dispatch Table

Code

#include <stdio.h>
typedef int (*fp) (int, int);
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
    static fp ops[] = {add, sub, mul, divide};
    int ops_count = sizeof(ops) / sizeof(ops[0]);
    if (cmd < 0 || cmd > ops_count)
    {
        return 0;
    }
    if (ops[cmd] == divide & cmd == 0)
    {
        return 0;
    }
    return ops[cmd](a,b);
}

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