Puts() vs printf()

iotest.c

/*
 * puts vs printf test
 *
 */

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

#define LOOP 100000

int main(int argc, char *argv[]) {
	int i;
	clock_t t1, t2;
	double tdiff_puts, tdiff_printf;

	t1 = clock();
	for(i=0; i<LOOP; ++i)
		puts("Hello World");
	t2 = clock();
	tdiff_puts = (double)(t2-t1) / CLOCKS_PER_SEC;

	t1 = clock();
	for(i=0; i<LOOP; ++i)
		printf("Hello World\n");
	t2 = clock();
	tdiff_printf = (double)(t2-t1) / CLOCKS_PER_SEC;

	printf("CPU Time puts: %f\n", tdiff_puts);
	printf("CPU Time printf: %f\n", tdiff_printf);

	return 0;
}