目前只遇到过两个:
#include <iostream>
#include <stdio.h>
using namespace std;
int main(void)
{
cout << __FILE__ << endl;
cout << __LINE__ << endl;
return 0;
}
标签:std,include,int,void,namespace,C++,预定,义宏,main
来源: https://www.cnblogs.com/Kisen-markDown/p/15790270.html