第一次作业

1.输出学号班级和姓名

package chap1;

public class wjd1 {
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        System.out.println("193230125计算机1901王靖东");
    }
}

2.输出以下图形

     *
    ***
   *****
    ***
     *

package chap1;

public class wjd2 {
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        System.out.println("    *");
        System.out.println("   ***");
        System.out.println("  *****");
        System.out.println("   ***");
        System.out.println("    *");

    }
}

3.定义两个整型变量a=5  b=8  求平方和并输出

package chap1;

public class wjd3 {
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int a=5,b=8;
        int c=a*a+b*b;
        System.out.println(c);
    }
}