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
    if(cmd == 0 ){
        int (*ad)(int,int) = &add;
        int SUM = (*ad)(a,b);
        return SUM;
    }
    else if(cmd == 1){
        int (*s)(int,int) = &sub;
        int SUBT = (*s)(a,b);
        return SUBT;
    }else if(cmd == 2){
        int (*m)(int,int) = &mul;
        int MULT = (*m)(a,b);
        return MULT;
    }else if(cmd == 3){
        int (*d)(int,int) = &divide;
        int DIV = (*d)(a,b);
        return DIV;
    }
}

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