View Compilation Error

0_0_20766064_13513\Main.java:1: 错误: 非法字符: '#'
#include<iostream>
^
0_0_20766064_13513\Main.java:1: 错误: 需要class, interface或enum
#include<iostream>
        ^
0_0_20766064_13513\Main.java:3: 错误: 需要class, interface或enum
int main(){
^
0_0_20766064_13513\Main.java:5: 错误: 需要class, interface或enum
	while(cin>>n&&n){
	^
0_0_20766064_13513\Main.java:7: 错误: 需要class, interface或enum
		int e=0;
		^
0_0_20766064_13513\Main.java:8: 错误: 需要class, interface或enum
		while(ans>9){
		^
0_0_20766064_13513\Main.java:10: 错误: 需要class, interface或enum
			ans/=10;
			^
0_0_20766064_13513\Main.java:11: 错误: 需要class, interface或enum
		}
		^
0_0_20766064_13513\Main.java:13: 错误: 需要class, interface或enum
	}
	^
9 个错误