View Compilation Error

0_0_27255221_5803\Main.java:1: 错误: 非法字符: '#'
#include<stdio.h>
^
0_0_27255221_5803\Main.java:1: 错误: 需要class, interface或enum
#include<stdio.h>
        ^
0_0_27255221_5803\Main.java:5: 错误: 需要class, interface或enum
    while(scanf("%d",&n)!=EOF)
    ^
0_0_27255221_5803\Main.java:8: 错误: 需要class, interface或enum
        else printf("no\n");
        ^
0_0_27255221_5803\Main.java:9: 错误: 需要class, interface或enum
    }                                       
    ^
5 个错误