Mega Code Archive
Returns the difference, in seconds, between time1 and time2( time2 - time1)
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//Declaration: double difftime(time_t time2, time_t time1);
#include <time.h>
#include <stdio.h>
int main(void)
{
time_t start, end;
volatile long unsigned j;
start = time(NULL);
for(j=0; j<500; j++) ;
end = time(NULL);
printf("Loop used %f seconds.\n", difftime(end, start));
return 0;
}
/*
Loop used 0.000000 seconds.
*/
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