View Compilation Error

0_0_28703033_20403\Main.java:1: 错误: 非法字符: '#'
#include <stdio.h> 
^
0_0_28703033_20403\Main.java:1: 错误: 需要class, interface或enum
#include <stdio.h> 
         ^
0_0_28703033_20403\Main.java:4: 错误: 需要class, interface或enum
   while(scanf("%d",&a)!=EOF){
   ^
0_0_28703033_20403\Main.java:5: 错误: 需要class, interface或enum
       for(int i=1;i<=a;i++){ 
                   ^
0_0_28703033_20403\Main.java:5: 错误: 需要class, interface或enum
       for(int i=1;i<=a;i++){ 
                        ^
0_0_28703033_20403\Main.java:7: 错误: 需要class, interface或enum
       } 
       ^
0_0_28703033_20403\Main.java:9: 错误: 需要class, interface或enum
   } 
   ^
0_0_28703033_20403\Main.java:11: 错误: 需要class, interface或enum
   sum=0;
   ^
0_0_28703033_20403\Main.java:12: 错误: 需要class, interface或enum
}
^
9 个错误