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 (*funptr)(int a,int b);
int execute_command(int a, int b, int cmd) {
    int val;
    switch (cmd){
        case 0:
         funptr=add;
         val=funptr(a,b);
         break;
         case 1:
         funptr=sub;
         val=funptr(a,b);
         break;
         case 2:
         funptr=mul;
         val=funptr(a,b);
         break;
         case 3:
         funptr=divide;
         val=funptr(a,b);
         break;
    }      
    
    return val;
}

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