第三次作业

1.输入商品单价，数量，求总价。活动8折后抹零，计算活动价。

输入付款金额，计算找零并输出

 

package lianxi;

import java.util.Scanner;

 

public class Lianxi {

/**

 * @param args

 */

public static void main(String[] args) {

// TODO Auto-generated method stub

 

Scanner input=new Scanner(System.in);

System.out.println("输入单价");

double price =input.nextDouble();

System.out.println("输入数量");

int num=input.nextInt();

double sum =price*num;

System.out.println("总价是"+sum);

int zhehou =(int)(sum*0.8);

System.out.println("折后抹零价钱"+zhehou);

System.out.println("input you pay");

double pay =input.nextDouble();

double zl = pay - zhehou;

System.out.println("zhanoling:"+zl);

 

 

 

}

 

}

 

2.输入一个三位数，求个位，十位和百位。

 

package lianxi;

import java.util.Scanner;

 

public class Lianxi {

/**

 * @param args

 */

public static void main(String[] args) {

// TODO Auto-generated method stub

 

Scanner input=new Scanner(System.in);

int a=input.nextInt();

//456

int ge=a %10;

int shi=a/100;

int bai=a/10%10;

System.out.println("个"+ge+"十"+shi+"百"+bai);

 

 

 

}

 

}

 

3.输入大写字母，转成对应的小写字母

package lianxi;

import java.util.Scanner;

 

public class Lianxi {

/**

 * @param args

 */

public static void main(String[] args) {

// TODO Auto-generated method stub

System.out.println("输入一个字符");

Scanner input=new Scanner(System.in);

char c=input.next().charAt(0);

System.out.println("对应的小写字母是"+(char)(c+32));

 

 

 

}

 

}

 

4.输入2个数，用三目运算符，输出较大数

package lianxi;

import java.util.Scanner;

 

public class Lianxi {

/**

 * @param args

 */

public static void main(String[] args) {

// TODO Auto-generated method stub

 

Scanner input=new Scanner(System.in);

System.out.println("输入第一个数");

int a=input.nextInt();

System.out.println("输入第二个数");

int b=input.nextInt();

int max=a>b?a:b;

System.out.println("较大的数是"+max);

 

 

 

 

}

 

}