/* func1.c   P. Conrad 10/12/05 */

#include <stdio.h>

int square(int a)
{
  int y = a * a;
  printf("y=  %d \n", y);
  
  return y;
}

int main(void)
{
  int a, b, c;
  int x, y, z;
  a=1;  b=2;  c=3;

  x = square(a);
  y = square(b);
  z = square(c);

  printf("a=%d b=%d c=%d \n", a, b, c);
  printf("x=%d y=%d z=%d \n", x, y, z);
  return 0;
}