Function Pointer Dispatch Table

Code

#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 (*addptr)(int, int) = &add; 
    int (*subptr)(int, int) = &sub;
    int (*mulptr)(int, int) = &mul;
    int (*divptr)(int, int) = &divide;
    if(cmd == 0){
        return addptr(a, b);
    }else if(cmd == 1){
        return subptr(a, b);
    }else if(cmd == 2){
        return mulptr(a, b);
    }else{
        return divptr(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