#include <stdio.h>
#define PI 3.14
int main () {
float radius, perimeter, area;
scanf("%f", &radius);
perimeter = 2 * PI * radius;
area = PI * radius * radius;
printf("圆的周长是%f,圆的面积是%f", perimeter, area);
return 0;
}
时间:2024-04-11 06:28:25
#include <stdio.h>
#define PI 3.14
int main () {
float radius, perimeter, area;
scanf("%f", &radius);
perimeter = 2 * PI * radius;
area = PI * radius * radius;
printf("圆的周长是%f,圆的面积是%f", perimeter, area);
return 0;
}