题解 | #牛牛的圆#
牛牛的圆
https://www.nowcoder.com/practice/75a202e826d048a39824ec694b5ce7e3
#include <stdio.h>
int main() {
int r;
scanf("%d",&r);
float s;
s=3.14*r*r;
printf("%f\n",s);
return 0;
}
#菜狗的解题#牛牛的圆
https://www.nowcoder.com/practice/75a202e826d048a39824ec694b5ce7e3
#include <stdio.h>
int main() {
int r;
scanf("%d",&r);
float s;
s=3.14*r*r;
printf("%f\n",s);
return 0;
}
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