JAVA Step4-3 (반복문 스캐너)

for문 스캐너

import java.util.Scanner;

public class forguguplus {
	public static void main (String [] args){
    


		Scanner sc = new Scanner(System.in);
		System.out.println("원하는 구구단을 입력하세요.");
		int gugu = sc.nextInt();
		
		int a;
		int b;
		int total = 0;
		
		for(a = 1; a <= 9; a++) {
			b = gugu * a;
			total += b;
		}
		System.out.println(total);
        sc.close();
    }
}

while문 스캐너

import java.util.Scanner;

public class whileguguplus {
	public static void main (String [] args){
    


		Scanner sc = new Scanner(System.in);
		System.out.println("원하는 구구단을 입력하세요.");
		int gugu = sc.nextInt();
		
		int a =1;
		int b;
		int total = 0;
		
		while (a<=9) {
			b = gugu * a;
			total += b;
			a++;
		}
		System.out.println(total);
		sc.close();
    }
}

dowhile문 스캐너

import java.util.Scanner;

public class Note {
	public static void main (String [] args){
    


		Scanner sc = new Scanner(System.in);
		System.out.println("원하는 구구단을 입력하세요.");
		int gugu = sc.nextInt();
		
		int a =1;
		int b;
		int total = 0;
		
		do {
			b = gugu * a;
			total += b;
			a++;
		} while (a<=9);
		System.out.println(total);
		sc.close();
    }
}