JAVA
package javaapplication57;
import java.util.Scanner;
public class JavaApplication57 {
public static void main(String[] args) {
Scanner input=new Scanner(System.in);
String a=input.nextLine();
System.out.println("hello, "+a);
}
}
呈現輸出短少
可是如果用一個while卻無線迴圈