一个简单的计时器

#include <iostream>
using namespace std;

void show()
{
    static int i = 0;
    long t = time(NULL);
    while(t == time(NULL));
    cout <<  "当前是第 " << i++ <<" 秒;" << endl;
}

int main(int argc, char *argv[])
{
    for(;;)
    show();
    return 0;
}