[JAVA] 백준 단계별로 풀어보기_2단계(if문)

1330번 두 수 비교하기

import java.util.Scanner;

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

        int A = sc.nextInt();
        int B = sc.nextInt();

        if (A > B) {
            System.out.println(">");
        } else if (A < B) {
            System.out.println("<");
        } else {
            System.out.println("==");
        }
    }
}

9498번 시험 성적

import java.util.Scanner;

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

        int score = sc.nextInt();

        if (score <= 100 && score >=90) {
            System.out.println("A");
        } else if (score <= 89 && score >=80) {
            System.out.println("B");
        } else if (score <= 79 && score >=70) {
            System.out.println("C");
        } else if (score <= 69 && score >= 60) {
            System.out.println("D");
        } else {
            System.out.println("F");
        }
    }
}

2753번 윤년

import java.util.Scanner;

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

        int year = sc.nextInt();

        if ((year % 4 == 0) && (year % 100 != 0) || (year % 400 == 0)) {
            System.out.println("1");
        } else {
            System.out.println("0");
        }
    }
}

14681번 사분면 고르기

import java.util.Scanner;

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

        int x = sc.nextInt();
        int y = sc.nextInt();

        if (x > 0 && y > 0) {
            System.out.println("1");
        } else if (x < 0 && y > 0) {
            System.out.println("2");
        } else if (x < 0 && y < 0) {
            System.out.println("3");
        } else {
            System.out.println("4");
        }
    }
}

2884번 알람 시계

import java.util.Scanner;

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

        int H = sc.nextInt();
        int M = sc.nextInt();

        if (M < 45) {
            H -= 1;
            M = 60 - (45 - M);
            if (H < 0) {
                H = 23;
            }
            System.out.println(H + " " + M);
        } else {
            System.out.println(H + " " + (M-45));
        }
    }
}