cpp/C5/P4/c4-5-2.c

#include <stdio.h>
int main()
{
  int x,y;
  scanf("%d",&x);
  if (x>=0)
    if (x>0) y=1;
    else     y=0;
  else       y=-1;
  printf("x=%d,y=%d\n",x,y);
  return 0;
}