View Compilation Error

0_0_37036786_253.cpp: In function 'void pop(sta*, int)':
0_0_37036786_253.cpp:34:33: error: 'top' was not declared in this scope
           for(int i=max_level;i<top;i++)
                                 ^
0_0_37036786_253.cpp:36:34: error: 'sta' has no member named 'elemment'
                 p->element[i]=p->elemment[i+1];
                                  ^