c get time
/* localtime example */
#include <stdio.h>
#include <time.h>
int main ()
{
time_t rawtime;
struct tm * timeinfo;
time ( &rawtime );
timeinfo = localtime ( &rawtime );
printf ( "Current local time and date: %s", asctime (timeinfo) );
return 0;
}c gettimeofday example
#include <time.h>
#include <sys/time.h>
#include <stdlib.h>
#include <stdio.h>
int main(int argc, char **argv)
{
if (argc < 2)
{
printf("USAGE: %s loop-iterations\n", argv[0]);
return 1;
}
int iterations = atoi(argv[1]);
struct timeval start, end;
gettimeofday(&start, NULL);
for (int i = 0; i < iterations; i++)
{
}
gettimeofday(&end, NULL);
printf("%ld\n", ((end.tv_sec * 1000000 + end.tv_usec)
- (start.tv_sec * 1000000 + start.tv_usec)));
return 0;
}Copyright © 2021 Codeinu
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