Java第一次作业
1、输入班级学号和姓名
public class XingMing{
public static void main (String[] args){
System.out.println("计算机1902 32 辛事成")
}
}
2/输入以下图形
*
***
*****
***
*
public class TuXing{
public static void main (String[]args){
for (int a =1;a<=(3-a);a++){
for(int b= 1;b<=(3-a);b++){
System.out.print(" ");
}
for(int c = 1;c<=2*a-1;c++){
System.out.print("*");
}
System.out.print("/n");
}
for(int a =2;a>=a;a--);{
for(int b =2;b>=a;b--){
System .out.print(" ");
}
for(int c =1;c<=2*a-1;c++){
System.out.print("*");
]
System.out.print("/n");
}
}
}
3、定义两个整型变量a=5 b=8 求平方和并输出
public class Sum{
public static void main(String[]
args){
int a =5;
int b=8;
System.out.println(a*a+b*b):
System.out.println((a+b)*(a+b));
}
}