题解 | #牛牛的圆#
牛牛的圆
https://www.nowcoder.com/practice/75a202e826d048a39824ec694b5ce7e3
#include <stdio.h>
#define T 3.14 //定义一下派
int main() {
int a;
float b;
scanf("%d",&a);
b=a*a*T;
printf("%.2f",b);
return 0;
}
牛牛的圆
https://www.nowcoder.com/practice/75a202e826d048a39824ec694b5ce7e3
#include <stdio.h>
#define T 3.14 //定义一下派
int main() {
int a;
float b;
scanf("%d",&a);
b=a*a*T;
printf("%.2f",b);
return 0;
}
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