C++中时间记录的常用操作

常用操作"/>

C++中时间记录的常用操作

C++中时间的记录

C++中做时间记录我就用到两种情况

1. 算法处理时长的记录(cpp)

#include<time.h>
#include<iostream>int main(void)
{clock_t start,finish;clog << "开始检测..." << endl;start = clock()# 处理过程...# ...# ...处理结束finish = clock()clog << "检测结果: ";clog << "耗时: " << (finish-start)/1000 << "ms" << endl;return 0;
}

2. 记录收到请求和某些关键时间发生的时间点

• 简单打印一下时间(cpp)

#include <time.h>
#include <iostream>int main(void)
{time_t t;struct tm *timeinfo;  //结构体time(&t);timeinfo = localtime(&t);clog << "时间：" << asctime(timeinfo) << endl;  //以字符串形式输出localtime本地时间return 0;
}

• 若要单独打印时间或者日期(Clang)

#include <time.h>
#include <stdio.h>
int main()
{char *wday[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};time_t t;struct tm *p;time(&t);p = localtime(&t); //取得当地时间printf("%d/%02d/%02d ", (1900+p->tm_year), (1+p->tm_mon), p->tm_mday);printf("%s %02d:%02d:%02d\n", wday[p->tm_wday], p->tm_hour, p->tm_min, p->tm_sec); //wday:星期return 0;
}

可参考 打印（输）出系统时间-----time相关函数