View Compilation Error

0_0_29412729_27827\Main.java:1: 错误: 需要class, interface或enum
int main(){
^
0_0_29412729_27827\Main.java:1: 错误: 需要class, interface或enum
int main(){
    ^
0_0_29412729_27827\Main.java:3: 错误: 需要class, interface或enum
          while(scanf("%d",&i)!=EOF){
          ^
0_0_29412729_27827\Main.java:5: 错误: 需要class, interface或enum
                 for(j=1;j<=i;j++)
                 ^
0_0_29412729_27827\Main.java:5: 错误: 需要class, interface或enum
                 for(j=1;j<=i;j++)
                         ^
0_0_29412729_27827\Main.java:5: 错误: 需要class, interface或enum
                 for(j=1;j<=i;j++)
                              ^
0_0_29412729_27827\Main.java:7: 错误: 需要class, interface或enum
                printf("%ld\n\n",sum);
                ^
0_0_29412729_27827\Main.java:8: 错误: 需要class, interface或enum
           }    
           ^
0_0_29412729_27827\Main.java:10: 错误: 需要class, interface或enum
 }
 ^
9 个错误