else if(n<70)printf("D\n");
else if(n<80)printf("C\n");
else if(n<90)printf("B\n");
else printf("A\n");
return 0;
}
10·求建筑高度
#include<stdio.h>
int main()
{
float x,y,a,b,c,d;
scanf("%f,%f",&x,&y);
a=(x-2)*(x-2)+(y-2)*(y-2);
b=(x-2)*(x-2)+(y+2)*(y+2);
c=(x+2)*(x+2)+(y-2)*(y-2);
d=(x+2)*(x+2)+(y+2)*(y+2);
if(a<=1||b<=1||c<=1||d<=1)printf("10"); else printf("0");
return 0;
}
