结构体与函数指针的特殊应用

#include <iostream>

using namespace std;

void print(int);

typedef struct
{
void (*print)(int num);
}TEST, *PTEST;

int main()
{
TEST test;
test.print = print;
test.print(10);

TEST test2 = {print};
test2.print(20);

return 0;
}

void print(int num)
{
cout << num << endl;
}