C/C++ clock()

 

{

　　clock_t start = clock();

　　for(int i = 0; i < 1000000; i++)

　　{

　　　　static int var = 0;

　　　　was ++;

　　}

　　clock_t end = clock();

}

// return time used by the processor clock. In order to obtain the number of seconds used by the CPU, you need to divide CLOCKS_PER_SEC.