View Compilation Error

0_0_39376308_2814\Main.java:1: 错误: 非法字符: '#'
#include<stdio.h>
^
0_0_39376308_2814\Main.java:1: 错误: 需要class, interface或enum
#include<stdio.h>
        ^
0_0_39376308_2814\Main.java:5: 错误: 需要class, interface或enum
    scanf("%d",&n);
    ^
0_0_39376308_2814\Main.java:6: 错误: 需要class, interface或enum
	while(n)
	^
0_0_39376308_2814\Main.java:9: 错误: 需要class, interface或enum
		for(int i = 1;i<=n;i++)
		^
0_0_39376308_2814\Main.java:9: 错误: 需要class, interface或enum
		for(int i = 1;i<=n;i++)
		              ^
0_0_39376308_2814\Main.java:9: 错误: 需要class, interface或enum
		for(int i = 1;i<=n;i++)
		                   ^
0_0_39376308_2814\Main.java:14: 错误: 需要class, interface或enum
			} else{
			^
0_0_39376308_2814\Main.java:16: 错误: 需要class, interface或enum
			   sum = sum+s*2;
			   ^
0_0_39376308_2814\Main.java:17: 错误: 需要class, interface或enum
		    }
		    ^
0_0_39376308_2814\Main.java:20: 错误: 需要class, interface或enum
		scanf("%d",&n);
		^
0_0_39376308_2814\Main.java:21: 错误: 需要class, interface或enum
	}
	^
12 个错误