#include <stdio.h>
    main() {
      int  x, y, z;
      printf("input data x, y ? \n");
      scanf("%d %d",&x,&y);
      printf("\n    x    y      !x      x||y    x&&y");
      printf("\n%5d%5d",x,y);
      z = !x;     printf("%8d",z);
      z = x || y; printf("%8d",z);
      z = x && y; printf("%8d",z);
      printf("\n");
      while(1);
    }