Java入门——day31

1.编写程序，完成用户信息录入。要求录入姓名，性别，年龄，家庭住址这四项信息。

package com.wuzy;
public class Person {
    private String name;
    private char sex;
    private int age;
    String home;
    public static void main(String[] args) {
        Person p1=new Person();
        Person p2=new Person();
        p1.name="小明";
        p1.sex='m';
        p1.age=20;
        p1.home="翻斗花园201室";
        p2.name="花花";
        p2.sex='f';
        p2.age=18;
        p2.home="龙兴小区501室";
        System.out.println("我是"+p1.name+"，性别"+p1.sex+"，年龄"+p1.age+"，家住"+p1.home);
        System.out.println("我是"+p2.name+"，性别"+p2.sex+"，年龄"+p2.age+"，家住"+p2.home);
    }
}

 2.编写求两个数之和的函数，要求使用函数重载，能求整数、长整型、浮点、双精度等数的和。

package helloworld;
import java.util.Scanner;
public class study{
    public static int sum(int a,int b) {
        return a+b;
    }
    public static long sum(long a,long b)
    {
     return a+b;
    }
    public static float sum(float a,float b)
    {
     return a+b;
    }
    public static double sum(double a,double b)
    {
     return a+b;
    }
    public static void main(String[] args){
        Scanner in=new Scanner(System.in);
        System.out.println("请输入两个int型数：");
        int a1,a2;
        a1=in.nextInt();
        a2=in.nextInt();
        System.out.println("两数之和："+sum(a1,a2));
        System.out.println("请输入两个long型数：");
        long b1,b2;
        b1=in.nextLong();
        b2=in.nextLong();
        System.out.println("两数之和："+sum(b1,b2));
        System.out.println("请输入两个float型数：");
        float c1,c2;
        c1=in.nextFloat();
        c2=in.nextFloat();
        System.out.println("两数之和："+sum(c1,c2));
        System.out.println("请输入两个double型数：");
        double d1,d2;
        d1=in.nextDouble();
        d2=in.nextDouble();
        System.out.println("两数之和："+sum(d1,d2));
    }
}