View Compilation Error

0_0_23304956_5105.cpp: In function 'int main()':
0_0_23304956_5105.cpp:6:23: error: 'n' was not declared in this scope
     while(scanf("%d",&n)!=EOF)
                       ^
0_0_23304956_5105.cpp:18:1: error: expected ';' before '}' token
 }
 ^
0_0_23304956_5105.cpp:29:22: error: expected ';' before '}' token
                      }
                      ^