2021-04-13 자바 조건문 실습 (스마트인재개발원)

package day2;

import java.util.Scanner;

public class ex11조건문 {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		int age = sc.nextInt();
		
		if(age >= 20) {
			
			System.out.println("성인입니다.");
		
		}
		
	}

}


package day2;

import java.util.Scanner;

public class ex12조건문실습 {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		System.out.print("정수를 입력하세요 :");
		int num = sc.nextInt();
		
		if (num %3 ==0 && num%5 ==0) {
			System.out.println("3과 5의 배수입니다.");
		}

	}

}


package day2;

import java.util.Scanner;

public class ex13조건문ifes {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		System.out.print("정수를 입력하세요 :");
		int input_number = sc.nextInt();
		String result = "";
		
		if(input_number%2 == 0)
		{
			
			//System.out.println(input_number+"는(은) 짝수입니다.");			
			 result = "짝수";
		}
		else { 
			//System.out.println(input_number+"는(은) 홀수입니다.");
			 result = "짝수";
		}
	System.out.println(input_number + "는(은)" +result+"입니다.");
		
	}

}


package day2;

import java.util.Scanner;

public class ex14조건문실습 {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);		
		int result = 0;
		
		System.out.print("정수를 입력하세요 :");
		int input_number = sc.nextInt();
		
		//마지막 자리수를 구해라
		int sub_number = input_number%10 ;
		
		if(sub_number < 5) 
		{	
			result = input_number - sub_number;			
		}
		else 
		{
			result = input_number + (10-sub_number);
		}				
		System.out.println(result);
	}

}


package day2;

import java.util.Scanner;

public class ex15조건문실습 {
	public static void main(String[] args) {
	
	Scanner sc = new Scanner(System.in);		
	int result = 0;

	
	System.out.print("일한시간을 입력하세요 :");
	int work_hour = sc.nextInt();	
	int ex_hour = (work_hour%8);
	
	if(work_hour > 8) {
		
		result = (int) ((work_hour - ex_hour)*5000 + (ex_hour*5000*1.5));
		
		
	}else {
		
		result = work_hour*5000;		
	
	}
	System.out.println(result);
}
}