作业1

1.输出学号班级和姓名

package work1;

public class jth1 {
    
        public static void main(String[] args) {
            
            System.out.println("姜天浩 193230106 计算机1901");
        }
        }

2.输出以下图形

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

package work1;

public class work2 {
    public static void main(String[] args) {
        
        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 work1;

public class zy3 {
    public static void main(String[] args) {
        int a,b,sum;
        a=5;
        b=8;
        sum=a*a+b*b;
        System.out.println("sum="+sum);
    }
}