Java第三次作业
1.输入2个数,交换后输出
package Homework; import java.util.Scanner; public class Test6 { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Scanner input =new Scanner(System.in); System.out.println("输入交换前a,b的值"); int a=input.nextInt(); int b=input.nextInt(); int c; System.out.println("a="+a+"\t"+"b="+b+"\t"); c=a; a=b; b=c; System.out.println("a="+a+"\t"+"b="+b+"\t"); } }
2.输入2个数,求平方和
package Homework; import java.util.Scanner; public class Test7 { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Scanner input =new Scanner(System.in); System.out.println("输入两个数a,b的值"); int a=input.nextInt(); int b=input.nextInt(); System.out.println(a*a+b*b); } }
3.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 Homework; import java.util.Scanner; public class Test8 { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Scanner input=new Scanner(System.in); System.out.println("请输入商品单价"); double price=input.nextDouble(); System.out.println("请输入商品数量"); int num=input.nextInt(); double sum=price*num; int discount=(int)(sum*0.8); System.out.println("输入付款金额"); int fukuan=input.nextInt(); double zhaoling=fukuan-sum; System.out.println("总价="+sum+"\t"+" 活动价="+discount+"\t"+" 付款"+fukuan+"元,"+" 找零"+zhaoling+"元"+"\t"); } }
4.输入一个三位数,求个位,十位和百位。
package Homework; import java.util.Scanner; public class Test9 { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Scanner input=new Scanner(System.in); System.out.println("输入一个三位数"); int num=input.nextInt(); int ge=num%10; System.out.println("个位是"+ge); int shi=num/10%10; System.out.println("十位是"+shi); int bai=num/100; System.out.println("百位是"+bai); } }
5.输入大写字母,转成对应的小写字母
package Homework; import java.util.Scanner; public class Test11 { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Scanner input=new Scanner(System.in); System.out.println("输入一个大写字母"); String a=input.nextLine(); char c; c=a.charAt(0); System.out.println((char)(c+32)); } }
6.输入2个数,用三目运算符,输出较大数
package Homework; import java.util.Scanner; public class Test10 { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Scanner input=new Scanner(System.in); System.out.println("输入一个两位数"); int x=input.nextInt(); int y=input.nextInt(); int max=x>y?x:y; System.out.println("输出较大的数"+max); } }