[Java] 29. Test4 (결과가 나오도록 함수 구현하기)

package chap11;
/*
 * 결과가 나오도록  함수 구현하기
 * double round(실수형,소숫점이하 자리수) : 반올림하여 출력
 * double truncate(실수형,소숫점이하 자리수) : 버림하여 출력 
 */
public class Test0321_4 {
	public static void main(String[] args) {
		System.out.println(round(3.1215,1)); //3.1
		System.out.println(round(3.1215,2)); //3.12
		System.out.println(round(3.1215,3)); //3.122
		System.out.println(round(3.1215,4)); //3.1215
		System.out.println(truncate(3.15345,1));  //3.1
		System.out.println(truncate(3.15345,2));  //3.15
		System.out.println(truncate(3.15345,3));  //3.153
		System.out.println(truncate(3.15345,4));  //3.1534
	}	
}