View Compilation Error

0_0_25348118_17851\Main.java:1: 错误: 非法字符: '#'
#include<stdio.h>
^
0_0_25348118_17851\Main.java:1: 错误: 需要class, interface或enum
#include<stdio.h>
        ^
0_0_25348118_17851\Main.java:5: 错误: 需要class, interface或enum
	int n,i;
	^
0_0_25348118_17851\Main.java:6: 错误: 需要class, interface或enum
	while((scanf("%d",&n))!=EOF)
	^
0_0_25348118_17851\Main.java:10: 错误: 需要class, interface或enum
         i=s(n);
         ^
0_0_25348118_17851\Main.java:11: 错误: 需要class, interface或enum
		 printf("%d\n",i);
		 ^
0_0_25348118_17851\Main.java:12: 错误: 需要class, interface或enum
	}
	^
0_0_25348118_17851\Main.java:14: 错误: 需要class, interface或enum
}
^
0_0_25348118_17851\Main.java:19: 错误: 需要class, interface或enum
  else if(n==2)
  ^
0_0_25348118_17851\Main.java:21: 错误: 需要class, interface或enum
  else if(n==3)
  ^
0_0_25348118_17851\Main.java:23: 错误: 需要class, interface或enum
  else
  ^
0_0_25348118_17851\Main.java:25: 错误: 需要class, interface或enum
}
^
12 个错误