Just wanna estimate the process ...
Just wanna estimate the process time of my algorithm homework.
#include <sys/time.h> struct timeval t_start, t_end; gettimeofday(&t_start, NULL); double start = t_start.tv_sec + (double)t_start.tv_usec / 1000000; // Code to be estimated here gettimeofday(&t_end, NULL); double end = t_end.tv_sec + (double)t_end.tv_usec / 1000000; printf("%f seconds\n", end - start);
This method came from one of my Data Structure homework in last semester.
Can estimated even if the process time is less than one second.
This is the method which I prefer to use.
So, this method can only be implemented on UNIX system.
#include <time.h> clock_t start = clock(); //Code to be estimated here clock_t end = clock(); printf("%f seconds\n", (end - start) / (float)CLOCKS_PER_SEC);
This method seems be common used.
But, seems it cannot estimate those process time less than one second.
Don't Know why... even if I remove the / (float)CLOCKS_PER_SEC.
It still comes out zero. O_o"
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