include stdio include stdlib include math int main void double printf

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
int main(void)
{
	double f,x,y;
	printf("Vvedite x\n");
	scanf("%lf", &x);
	printf("Vvedite y\n");
	scanf("%lf", &x);
	
	    if ((x-y)!=0)
	     {
   	 	  f= sqrt(x*y)+1/(x-y);
   	 	  printf("f=%f\n",f);
	     }
	    else 
		printf("HE PEIIIUTb");
	      
	system("pause");
	return 0;
}