代码运行时间

c++

1)GetTickCount()

#inlcude <windows.h>
int main()

{

  DWORD start_time = GetTickCount();

  {

    //code

  }

  DWORD end_time = GetTickCount();

  cout << "running times:" << end_time-start_time << "ms" << endl;

  return 0;

}

　　

2)clocl()

#include <time.h>

int main()

{

  clock_t start_time = clock();

  {

   //code

  }

  clock_t end_time = clock();

  cout << "running time:" << static_cast<double>(end_time-start_time)/CLOCK_PER_SEC*1000 << "ms" << endl;

  return 0;

}