#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 (*Call_test)())
{
printf("Entering Handle Function.\n ");
Call_test();
Call_test();
printf("Leaving Handle Function. \n");
}
int main()
{
Handle(Callback_1);
return 0;
}
Entering Handle Function.
Hello, this is Callback_1
Hello, this is Callback_1
Leaving Handle Function.
#include<stdio.h>
int Callback_1() // Callback Function 1
{
printf("Hello, this is Callback_1 ");
return 0;
}
int Callback_2() // Callback Function 2
{
printf("Hello, this is Callback_2 ");
return 0;
}
int Callback_3() // Callback Function 3
{
printf("Hello, this is Callback_3 ");
return 0;
}
int Handle(int (*Callbacktest)())
{
printf("Entering Handle Function. ");
Callbacktest();
printf("Leaving Handle Function. ");
}
int main()
{
printf("Entering Main Function. ");
Handle(Callback_1);
Handle(Callback_2);
Handle(Callback_3);
printf("Leaving Main Function. ");
return 0;
}
运行结果：
Entering Main Function.
Entering Handle Function.
Hello, this is Callback_1
Leaving Handle Function.
Entering Handle Function.
Hello, this is Callback_2
Leaving Handle Function.
Entering Handle Function.
Hello, this is Callback_3
Leaving Handle Function.
Leaving Main Function.有关回调函数：
带参数回调函数：
#include<stdio.h>
int Callback_1(int x) // Callback Function 1
{
printf("Hello, this is Callback_1: x = %d ", x);
return 0;
}
int Callback_2(int x) // Callback Function 2
{
printf("Hello, this is Callback_2: x = %d ", x);
return 0;
}
int Callback_3(int x) // Callback Function 3
{
printf("Hello, this is Callback_3: x = %d ", x);
return 0;
}
int Handle(int y, int (*Callback)(int))
{
printf("Entering Handle Function. ");
Callback(y);
printf("Leaving Handle Function. ");
}
int main()
{
int a = 2;
int b = 4;
int c = 6;
printf("Entering Main Function. ");
Handle(a, Callback_1);
Handle(b, Callback_2);
Handle(c, Callback_3);
printf("Leaving Main Function. ");
return 0;
}
运行结果：
Entering Main Function.
Entering Handle Function.
Hello, this is Callback_1: x = 2
Leaving Handle Function.
Entering Handle Function.
Hello, this is Callback_2: x = 4
Leaving Handle Function.
Entering Handle Function.
Hello, this is Callback_3: x = 6
Leaving Handle Function.
Leaving Main Function.