上机作业

package student;

import java.util.Scanner;

public class stu {

/**
 * @param args
 */
public static void main(String[] args) {
    final float Pai =3.14159f;
    
    /*int a = 5;
    if(a%2==1) System.out.println("奇数");
    else System.out.println("偶数");*/
    
    
    /*float sore;
    Scanner s = new Scanner(System.in);
    System.out.println("请输入圆的半径：");
    float r = s.nextFloat();
    sore = Pai*r*r;
    System.out.println("圆的面积为："+sore);*/
    
    
    /*float sore;
    Scanner s = new Scanner(System.in);
    System.out.println("请输入需要加密的数：");
    int r = s.nextInt();
    sore = (r*10+5)/2+Pai;
    int sore_2 = (int)sore;
    System.out.println(sore_2);*/
    
    
    /*int x,y,z;
    for(x=0;x<=20;x++){
        for(y=0;y<34;y++){
            for(z=0;z<=100;z+=3){
                if(x+y+z==100&&5*x+3*y+z/3==100)
                    System.out.println("公鸡多少："+x+",母鸡多少："+y+",小鸡多少："+z);*/
            }
        }
    }
    }
    

}