public class gedebahe { public static void main( String [] args) { for ( ) { int a=-1,b,c //b,c是分解出来的两个数 System.out.print("Please input a oushu:") //输入一个偶数 try { BufferedReader in = new BufferedReader(new InputStreamReader(System.in)) String inputLine = in.readLine() a = Integer.valueOf(inputLine).intValue() }catch (Exception exc) { System.out.println("Sorry,please input a number.") return } if (a%2!=0) { System.out.println("Sorry,please input a oushu.") return } for (b=1 b