This code is the simplest code to measure a program execution time more precisely.
It is using “struct timeval”.
#include <stdio.h>
#include <sys/time.h>
double getTimeElapsed(struct timeval end, struct timeval start)
{
return (end.tv_sec - start.tv_sec) + (end.tv_usec - start.tv_usec) / 1000000.00;
}
void main(){
struct timeval tvalBefore, tvalAfter;
gettimeofday(&tvalBefore, NULL);
// Do something here, this is the simplest program to measure the elapsed time. It is more precise than simple ctimer
gettimeofday(&tvalAfter, NULL);
double time_elapsed = getTimeElapsed(tvalAfter, tvalBefore);
printf("time_elapsed: %lf\n",time_elapsed);
}
I have referred the below two sites
http://levicui.blogspot.com/2011/04/calculate-elapsed-time-in-c.html
http://stackoverflow.com/questions/12722904/how-to-use-struct-timeval-to-get-the-execution-time
Good luck ^_^