编辑代码

#include<stdio.h>

int Callback_1() // Callback Function 1
{
    printf("Hello, this is Callback_1 \n");
    return 0;
}

int Callback_2() // Callback Function 2
{
    printf("Hello, this is Callback_2 \n");
    return 0;
}

int Callback_3() // Callback Function 3
{
    printf("Hello, this is Callback_3 \n");
    return 0;
}

    int Handle(int (*Callback)())
{
    printf("Entering Handle Function.\n ");
    Callback();
    printf("Leaving Handle Function.\n ");
}

int main()
{
    printf("Entering Main Function.\n ");
    Handle(Callback_1);
    Handle(Callback_2);
    Handle(Callback_3);
    printf("Leaving Main Function.\n");
    return 0;
}