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