输入3个数a,b,c，按大小顺序输出。

题目：输入3个数a,b,c，按大小顺序输出。

程序分析：首先输入数据，然后逐一比较。

import java.util.Scanner;
public class Prog34{
 public static void main(String[] args){
  System.out.print("请输入3个数：");
  Scanner scan = new Scanner(System.in);
  int a = scan.nextInt();
  int b = scan.nextInt();
  int c = scan.nextInt();
  scan.close();
  if(a<b){
   int t = a;
   a = b;
   b = t;
  }
  if(a<c){
   int t = a;
   a = c;
   c = t;
  }
  if(b<c){
   int t = b;
   b = c;
   c = t;
  }
  System.out.println(a+" "+b+" "+c);
 }
}