#include <stdio.h>
int main(void)
{
//Define variables
double x, y, prosorini;
/*function body*/
printf("\n Give values of x and y:");
scanf("%lf %lf", &x, &y);
printf("\nx = %f y = %f \n", x, y);
prosorini = x;
x = y;
y = prosorini;
printf("\n x = %f \t y = %f", y, x);
return 0;
}