JAVA第五次作业

int i,sum=0;
        for(i=1;i<=100;i++) {
        if(i%10!=3)
         sum=sum+i;
        }
        System.out.println("和为"+sum);

 

int i,j,k,l;
        for(i=1;i<=4;i++) 
        {
        for(j=1;j<=4-i;j++) 
        {
        System.out.print(" ");
    }
        for(k=1;k<=2*i-1;k++) 
        {
        System.out.print("*");
    }
        System.out.println();
    }
        System.out.println();
        for(j=1;j<=5;j++) 
        {
        for(i=5;i>=j;i--) 
        {
        System.out.print("*");
    }
        System.out.println();
    }

 

Scanner input=new Scanner(System.in);
        for(;;) {
        System.out.println("请输入姓名：");
        char a=input.next().charAt(0);
        if(a=='Q') {
        break;
        }     
        }
        System.out.println("程序结束");

 

Scanner input=new Scanner(System.in);
            int sum=0;
            int i=0;
            while(i<=4){
                System.out.println("请输入第"+(i+1)+"个学生的成绩");
                int a=input.nextInt();
                if(a>100||a<0) {
                    System.out.println("输入不合法请重新输入");
                continue;
            }
                 
                else {
                    sum+=a;
                    i++;
                }
            }                                                                    
            System.out.println("学生总成绩是"+sum);

 

public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner input=new Scanner(System.in);
        Random ta=new Random();
        int a=ta.nextInt(100);
        int s=0;
        for(;;) {
         System.out.println("请猜数字：");
        int b=input.nextInt();
        if(b>a) 
         System.out.println("大了点");
        else if(b<a) 
         System.out.println("小了点");
        else {
         System.out.println("答对了");
        break;
    }
        s+=1;
    }
        if(s<3)
         System.out.println("太棒了！");
        else if(3<=s&&s<5)
             System.out.println("   ");
        else if(5<=5&&s<=8)
         System.out.println("一般般");
        else
            System.out.println("太笨了");
       }
}

 

public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner input=new Scanner(System.in);
        System.out.println("请输入一个数：");
        int a=input.nextInt();
        boolean flage=true;
        for(int i=2;i<a;i++) {
        if(a%i==0) {
        flage=false;
        break;
    }
    }     
        if(flage==true)
        System.out.println("是质数");
        else
        System.out.println("不是质数");
       }
}

 

public class kkkkk {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int a=1,b=1,c=0,d;
        for(int i=1;i<=18;i++) {
        c=a+b;
        a=b;
        b=c;
        }
        System.out.println(c);
       }
}