Standard Library Functions - C Programming MCQ Questions and Answers

double atan2 (double y, double x);

#include <stdio.h>
#include <time.h>
int main ()
{
	time_t time1,time2;
	char get_input [256];
	double dif_sec;
	time (&time1);
	printf ("Please enter the name of your pet: ");
	gets (get_input);
	time (&time2);
	dif_sec = difftime (time2,time1);
	printf ("%.2f\n", dif_sec );
	return 0;
}