View Compilation Error

0_0_24816064_9354\Main.java:1: 错误: 非法字符: '#'
#include <cstdio>
^
0_0_24816064_9354\Main.java:1: 错误: 需要class, interface或enum
#include <cstdio>
         ^
0_0_24816064_9354\Main.java:5: 错误: 需要class, interface或enum
    while(~scanf("%d",&n))
    ^
0_0_24816064_9354\Main.java:8: 错误: 需要class, interface或enum
        while(n--)
        ^
0_0_24816064_9354\Main.java:11: 错误: 需要class, interface或enum
            scanf("%d",&a);
            ^
0_0_24816064_9354\Main.java:12: 错误: 需要class, interface或enum
            sum+=a;
            ^
0_0_24816064_9354\Main.java:13: 错误: 需要class, interface或enum
        }
        ^
0_0_24816064_9354\Main.java:15: 错误: 需要class, interface或enum
    }
    ^
0_0_24816064_9354\Main.java:19: 错误: 需要class, interface或enum
}
^
9 个错误