如何在C中定义函数数组

#include<stdio.h>

int add(int a, int b) {
    return a + b;
}

int subtract(int a, int b) {
    return a - b;
}

int multiply(int a, int b) {
    return a * b;
}

int divide(int a, int b) {
    return a / b;
}

int (*function_array[])(int, int) = {
    add,
    subtract,
    multiply,
    divide
};

int main() {
    int a = 10;
    int b = 5;
    printf("Add: %d\n", function_array[0](a, b));
    printf("Subtract: %d\n", function_array[1](a, b));
    printf("Multiply: %d\n", function_array[2](a, b));
    printf("Divide: %d\n", function_array[3](a, b));
    return 0;
}