#include <time.h>#include <sys/time.h>#include <iostream>#include <stdio.h>using namespace std;long long GetMillSec();int main(){long long nBegin = 0;long long nEnd = 0;nBegin = GetMillSec();struct timeval tv; gettimeofday(&tv,NULL);cout <<"sec:"<< tv.tv_sec << endl;//秒cout <<"u_sec:"<< tv.tv_usec << endl;//微秒cout <<"m_sec:"<< tv.tv_usec / 1000 << endl;/*time_t nSec = time((time_t*)NULL);cout <<"time1:"<< nSec << endl;time_t t2 = 0;time_t t3 = 0;t2 = time(&t3);cout <<"time2:"<< t2 << endl;cout <<"time3:"<< t3 << endl;*/for (int i = 0; i < 1000; i++){int nSub = 0;nSub += i;int n = atoi("11111");cout << nSub << endl;}nEnd = GetMillSec();long long nSub = nEnd - nBegin;cout <<"begin sec:"<< nBegin << endl;cout <<"end sec:"<< nEnd << endl;cout <<"sub Mill Sec1:"<< nSub << endl;cout <<"sub Mill Sec2:"<< nEnd - nBegin << endl;return 0;}long long GetMillSec(){long long nMillSec = 0;struct timeval tv; gettimeofday(&tv,NULL);nMillSec = (long long)tv.tv_sec * 1000;cout <<"nMIllSec1 ="<< nMillSec << endl;nMillSec += tv.tv_usec / 1000;cout <<"nMIllSec2 ="<< nMillSec << endl;return nMillSec;}
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