View Compilation Error

0_0_31003824_9898.cpp: In function 'int main()':
0_0_31003824_9898.cpp:5:23: error: 'n' was not declared in this scope
     while(scanf("%d",&n) != EOF)
                       ^
0_0_31003824_9898.cpp:8:9: error: expected primary-expression before 'while'
         while(n--)
         ^
0_0_31003824_9898.cpp:12:5: error: expected ',' or ';' before '}' token
     }
     ^
0_0_31003824_9898.cpp:13:5: error: 'renturn' was not declared in this scope
     renturn 0;
     ^