Java基础练习(每日五题)

1,通过代码编写，输一段话：“今天是学习的第一天”

package java4;

public class practise {
    public static void main(String[] args) {
        System.out.println("今天是学习的第一天");
    }
}

2,拼接打印：“XXX：我已经学习了JavaX年，我期望的工资是XXX”

package java4;

public class practise {
    public static void main(String[] args) {
        String name = "佐助";
        int year = 5;
        double salary = 5000.00;
        System.out.println(name + "：我已经学习了Java" +year+"年，我期望的工资是" +salary );
    }
}

 3,定义两个整数，并进行加减乘除的运算

package java4;

public class practise {
    public static void main(String[] args) {
        double a = 4;
        double b = 5;
        System.out.println(a + b);
        System.out.println(a - b);
        System.out.println(a * b);
        System.out.println(a / b);
    }
}

4，通过输入父亲和母亲的身高，运用公式计算出儿子和女儿的遗传身高

儿子身高（厘米）=（父亲身高+母亲身高）*1.08/2；

女儿身高（厘米）=（父亲身高*0.923+母亲身高）/2

package java4;

import java.util.Scanner;

public class practise {
    public static void main(String[] args) {
        System.out.println("请输入父亲的身高");
        double fatherheight = new Scanner(System.in).nextDouble();
        System.out.println("请输入母亲的身高");
        double motherheight = new Scanner(System.in).nextDouble();
        double sonheight = (fatherheight + motherheight)*1.08/2;
        double daughterheight = (fatherheight*0.923 + motherheight)/2;
        System.out.println("儿子的身高为："+ sonheight +"厘米");
        System.out.println("女儿的身高"+ daughterheight +"厘米");
    }
}

5，通过重载输出九九乘法表

package java4;

public class practise {
    public static void main(String[] args) {
        int x=9;
        print99(x);
    }
    public static void print99(int x){
        for(int i=1;i<=x;i++){
            for(int j=1;j<=i;j++){
                System.out.print(j + "*" + i + "=" +(j*i)+ "\t");
            }
            System.out.println();
        }
    }
}