我的代码：
#include <stdio.h>
#define PI 3.14159265358979323
int main()
{
int r;
double area;
scanf("%d", &r);
area = PI * r * r;
printf("%.7f", area);
return 0;
}
The author has 1 post.
【C语言】入门训练 圆的面积
 |
The author has 1 post.
|
我的代码：
#include <stdio.h> #define PI 3.14159265358979323 int main() { int r; double area; scanf("%d", &r); area = PI * r * r; printf("%.7f", area); return 0; } |
