已知输入圆的半径,求圆的周长和面积。
时间: 2024-06-14 11:06:32 浏览: 14
以下是两种求圆的周长和面积的例子:
1. Java代码:
```java
import java.util.Scanner;
public class yuanDeZhouChangMianJi {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入圆的半径:");
double r = scanner.nextDouble();
double π = 3.14;
double C = 2 * π * r;
double S = π * r * r;
System.out.println("该圆的半径为:" + "R=" + r);
System.out.println("该圆的周长为:" + "C=" + "2*3.14*" + r + "=" + C);
System.out.println("该圆的面积为:" + "S=" + "3.14*" + r + "*" + r + "=" + S);
}
}
```
2. C代码:
```c
#include <stdio.h>
#define PI 3.14159
int main() {
float r, L, S;
printf("请输入圆的半径:\n");
scanf("%f", &r);
L = 2 * PI * r;
S = PI * r * r;
printf("圆的周长是:%f5.2\n圆的面积是:%5.2f\n", L, S);
return 0;
}
```
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