View Compilation Error

0_0_29157788_27486\Main.java:1: 错误: 需要class, interface或enum
int main() {
^
0_0_29157788_27486\Main.java:1: 错误: 需要class, interface或enum
int main() {
    ^
0_0_29157788_27486\Main.java:3: 错误: 需要class, interface或enum
    int n;
    ^
0_0_29157788_27486\Main.java:4: 错误: 需要class, interface或enum
    while (cin >> n && n) {
    ^
0_0_29157788_27486\Main.java:6: 错误: 需要class, interface或enum
    }
    ^
0_0_29157788_27486\Main.java:8: 错误: 需要class, interface或enum
}
^
0_0_29157788_27486\Main.java:13: 错误: 需要class, interface或enum
    } else {
    ^
0_0_29157788_27486\Main.java:15: 错误: 需要class, interface或enum
    }
    ^
8 个错误