Thread: error: invalid use of undefined type ‘struct tms’

This:

Code:

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

struct tms tmsBegin,tmsEnd;
void time_start() { times(&tmsBegin); }
long time_stop()
{ times(&tmsEnd);
  return ((tmsEnd.tms_utime-tmsBegin.tms_utime)+
          (tmsEnd.tms_stime-tmsBegin.tms_stime))*1000/CLK_TCK;
}

int main()
{
	time_start();
	for(int t=0; t<1000000; t++)
	    printf("Test 1: %d\n", t);
	printf("Result: %ld\n", time_stop());
}

I took this code from the Internet, here's the log after trying to copy:

Code:

test.c: In function ‘time_start’:
test.c:6:1: warning: implicit declaration of function ‘times’ [-Wimplicit-function-declaration]
 void time_start() { times(&tmsBegin); }
 ^
test.c: In function ‘time_stop’:
test.c:9:3: error: invalid use of undefined type ‘struct tms’
   return ((tmsEnd.tms_utime-tmsBegin.tms_utime)+
   ^
test.c:9:3: error: invalid use of undefined type ‘struct tms’
test.c:10:11: error: invalid use of undefined type ‘struct tms’
           (tmsEnd.tms_stime-tmsBegin.tms_stime))*1000/CLK_TCK;
           ^
test.c:10:11: error: invalid use of undefined type ‘struct tms’