[C++] 纯文本查看 复制代码
#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;
}