Call back function implement

Call back function easily implement

#include <stdio.h>

void HelloWorld(int nIndex)

{

       printf("%d person say Hello World\n",nIndex);

}

void MyName(int len)

{

       printf("My name is 萧%d郎", len);

}

void callback(int i, void (* print)(int))

{

       print(i);

}

void main(void)

{

       callback(10,HelloWorld);

       callback(11, MyName);

       getchar();

}

Call back function implement