C Tutorial/time.h/clock

clock

Item Value Header file time.h Declaration clock_t clock(void); Return returns time or -1 if the time is not available.

To transform this value into seconds, divide it by CLOCKS_PER_SEC.

#include <time.h>
  #include <stdio.h>
  int main(void)
  {
   
    printf("Elapsed time: %u secs.\n", clock()/CLOCKS_PER_SEC);
   
  }