lind5-10.c

谭浩强第二版的课后习题的答案的源程序

#include<stdio.h>
main()
	{
	float x,y,height,a,b,c,d;
lin:    printf("\nPlease input the coordinate of the point.\n");
	scanf("%f,%f",&x,&y);
	a=(x-2)*(x-2);
	b=(x+2)*(x+2);
	c=(y-2)*(y-2);
	d=(y+2)*(y+2);
	a+c<=1||a+d<=1||b+c<=1||b+d<=1 ? (height=10):(height=0);
	printf("The height is %.0f\n",height);
	goto lin;
	}