对时间日期的操作

  1 //该程序计算一个时间持续的时间
  2 #include <iostream>
  3 #include <time.h>
  4 #include <stdlib.h>
  5 
  6 using namespace std;
  7 
  8 int main()
  9 {
 10     clock_t start, finish;
 11     start = clock();
 12     cout << (double)start / CLOCKS_PER_SEC << endl;
 13     int i = 10000000;
 14     while(i--);
 15     finish = clock();
 16     cout << (double)finish / CLOCKS_PER_SEC << endl; //将结果转化为以秒为单位
 17     return 0;
 18 }