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
    if (cmd == 0)
    {
        int (*f_sum)(int , int)  = add;
        int sum =  f_sum(a,b);
        return sum;

    }
    else if (cmd == 1)
    {
        int (*f_sum)(int , int)  = sub;
        int sum =  f_sum(a,b);
        return sum;

    }
    else if (cmd == 2)
    {
        int (*f_sum)(int , int)  = mul;
        int sum =  f_sum(a,b);
        return sum;

    }

    else if (cmd == 3)
    {
        int (*f_sum)(int , int)  = divide;
        int sum =  f_sum(a,b);
        return sum;

    }

    
    return 0;
}

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

 

 

 

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Input

10 5 0

Expected Output

15