class ideone {
	public static void main(String[] arg) {
		int a = 5; //정수를 변수로 설정
		System.out.println(a+5); //10
		a = 6;
		System.out.println(6+4); //10
 
		double b = 5.5; //실수를 변수로 설정
		System.out.println(b+5); //10.5
		b = 2.2;
		System.out.println(b+3.8); //6.0
 
		String d = "예쁜", e = "강아지";
		System.out.println(d+e);
		d = "사나운";
		System.out.println(d+e);
		d = "예쁜";
		e = "고양이";
		System.out.println(d+e);
	}
}

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