Thread: Help with timing a function!

Welp, a profiler is a program that tells you all kinds of useful tidbits about your program as it's run, including time spent in each function. However, if you want a quick and dirty solution:

Code:

#include <stdio.h>
#include <time.h>

void long_function(void)
{
  int i;

  for (i = 0; i < 10000000; i++)
    ;
}

int main(void)
{
  clock_t start;
  
  start = clock();
  long_function();
  printf("%f\n", (double)(clock() - start) / CLOCKS_PER_SEC);

  return 0;
}

Note that this isn't portable by any means, but I have yet to see it not work, and it serves it's purpose.