20240519 (JAVA START) | 특수목적코딩학원 광교본점

/* 
 * 프린트할때 항상:
 * public class Main {
 *    public static void main(String[] args) {
 *        System.out.print("something");              <= printing
 *        System.out.println("something");			  <= printing + press enter
 *        System.out.print("something\n");			  <= printing + press enter
 *    }
 * }
 */


//public class Main {
//	public static void main(String[] args) {
//		System.out.println("Hello World\n\n\n");
//		System.out.println("Apple is GOOOOODOD");
//	}
//}

//public class Main {
//	public static void main(String[] args) {
//		System.out.println("Hello");
//	}
//}

//public class Main {
//	public static void main(String[] args) {
//		System.out.print("Hello ");
//		System.out.println("World");
//	}
//}

//public class Main {
//	public static void main(String[] args) {
//		System.out.println("Hello");
//		System.out.print("World");
//	}
//}

//// SAME THING (new line = put \n together in "")
//public class Main {
//	public static void main(String[] args) {
//		System.out.print("Hello\nWorld");
//	}
//}

//public class Main {
//	public static void main(String[] args) {
//		System.out.print("\'Hello\'");
//	}
//}

//public class Main {
//	public static void main(String[] args) {
//		System.out.print("\"Hello World\"");
//	}
//}

//public class Main {
//	public static void main(String[] args) {
//		System.out.println("\"!@#$%^&*()\"");
//	}
//}

//public class Main {
//	public static void main(String[] args) {
//		System.out.println("\"C:\\Download\\hello.cpp\"");
//	}
//}



/* 변수: 빈상자
 * 
 * 
 * 정수
 * int		32bit, can take on different possiblities
 * long 	64bit, can take on much more possibilities but heavier
 * 
 * 실수
 * float
 * double
 * 
 * 문자
 * char
 * string
 * 
 * 
 * x (variable input) 쓰고싶다면
 * import java.util.Scanner     <=   at the start
 * Scanner t = new Scanner(System.in)   <=   near the end of the important announcing
 * 
 * 
 * NEXT QUESTIONS ARE ALL FROM CODEUP "기초2. 입출력문 및 연산자"
 */



//import java.util.Scanner;
//
//public class Main {
//	public static void main(String[] args) {
//		Scanner t = new Scanner(System.in);
//		
//		
////		x = 10;					if value is already set
////		y = 20;					if value is already set
//		int x = t.nextInt();
//		int y = t.nextInt();
//		
//		float z = t.nextFloat();
//		double p = t.nextDouble();
//		
//		System.out.println(x + y);
//	}
//}


//import java.util.Scanner;
//
//public class Main {
//	public static void main(String[] args) {
//		Scanner t = new Scanner (System.in);
//		
//		int x = t.nextInt();
//		System.out.println(x);
//	}
//}

//import java.util.Scanner;
//
//public class Main {
//	public static void main(String[] args) {
//		Scanner t = new Scanner (System.in);
//		
//		char x = t.next().charAt(0);
//		System.out.print(x);
//	}
//}

/* 문자받을때는 항상 char x = t.next().charAt(0);
 * char x  <=  변수를 문자형으로 선언
 * t.next() 는 그냥 string 프린트할때 쓰는거라서
 * charAt(0) 써서 string 말고 맨 앞줄 글자 하나 프린트해야됨
 */

//import java.util.Scanner;
//public class Main {
//	public static void main(String[] args) {
//		Scanner t = new Scanner (System.in);
//		float x = t.nextFloat();
//		System.out.printf("%.6f", x);
//	}
//}

/* 실수 (decimal places):
 * 
 * float x = t.nextFloat();
 * System.out.printf("%.6f", x);
 * 
 * 
 * t.nextFloat()    <= just memorize
 * USE "printf" WHEN YOU'RE CHANGING INPUT VALUE TO FIT DECIMAL PLACES
 *     ex. input is 5.3 but you want to print 5.30000
 * ("%.6f", x)    <=   print x in 6 decimal places (default)
 * 
 * if you want to print stuff next to each other with space, just do print(x + " " + y)
 * 
 * 
 * 산술연산: + - * / %
 *     unlike python, / does both 몫계산 AND real value 계산
 *            ex. print(5/2) = 2 (몫계산)
 *            ex 2. print((float)(5/2)) = 2.5  (real value) 
 *            ex 3. print((double)5/2)) = 2.5 (real value, uses 5 as 5.00)
 * 
 * printing ++x     =    adding 1 to x and printing (saves as +=1, prints with +=1)
 * printing x++     =    printing x and adding 1 to it (prints before, later saves as +=1)
 */




//import java.util.Scanner;
//public class Main {
//	public static void main(String[] args) {
//		Scanner t = new Scanner (System.in);
//		int x = t.nextInt();
//		int y = t.nextInt();
//		System.out.print(x + " " + y);
//	}
//}

//import java.util.Scanner;
//public class Main {
//	public static void main(String[] args) {
//		Scanner t = new Scanner (System.in);
//		char x = t.next().charAt(0);
//		char y = t.next().charAt(0);
//		System.out.print(y + " " + x);
//	}
//}

//import java.util.Scanner;
//public class Main {
//	public static void main(String[] args) {
//		Scanner t = new Scanner (System.in);
//		float x = t.nextFloat();
//		System.out.printf("%.2f", x);
//	}
//}

//import java.util.Scanner;
//public class Main {
//	public static void main(String[] args) {
//		Scanner t = new Scanner (System.in);
//		int x = t.nextInt();
//		System.out.print(x + " " + x + " " + x);
//	}
//}

//import java.util.Scanner;
//public class Main {
//	public static void main(String[] args) {
//		Scanner t = new Scanner (System.in);
//		long x = t.nextLong();
//		long y = t.nextLong();
//		System.out.print(x + y);
//	}
//}

//import java.util.Scanner;
//public class Main {
//	public static void main(String[] args) {
//		Scanner t = new Scanner (System.in);
//		long x = t.nextLong();
//		long y = t.nextLong();
//		System.out.print(x+y);
//	}
//}

//import java.util.Scanner;
//public class Main {
//	public static void main(String[] args) {
//		Scanner t = new Scanner (System.in);
//		long x = t.nextLong();
//		System.out.print(-x);
//	}
//}

//import java.util.Scanner;
//public class Main {
//	public static void main(String[] args) {
//		Scanner t = new Scanner (System.in);
//		char x = t.next().charAt(0);
//		System.out.print((char)(x + 1));
//	}
//}

//import java.util.Scanner;
//public class Main {
//	public static void main(String[] args) {
//		Scanner t = new Scanner (System.in);
//		int x = t.nextInt();
//		int y = t.nextInt();
//		System.out.print(x/y);
//	}
//}

//import java.util.Scanner;
//public class Main {
//	public static void main(String[] args) {
//		Scanner t = new Scanner (System.in);
//		int x = t.nextInt();
//		int y = t.nextInt();
//		System.out.print(x%y);
//		}
//}

//import java.util.Scanner;
//public class Main {
//	public static void main(String[] args) {
//		Scanner t = new Scanner (System.in);
//		long x = t.nextLong();
//		System.out.print(++x);
//	}
//}

//  TESTING HOW print((double)x/y) WORKS!!
// import java.util.Scanner;
//public class Main {
//	public static void main(String[] args) {
//		Scanner t = new Scanner (System.in);
//		int x = t.nextInt();
//		int y = t.nextInt();
//		System.out.print((double)x/y);
//	}
//}