View Compilation Error

0_0_19843498_20799.cpp: In function 'void splay(int)':
0_0_19843498_20799.cpp:46:5: error: 'top' was not declared in this scope
     top=0;q[++top]=x;
     ^
0_0_19843498_20799.cpp:46:11: error: 'q' was not declared in this scope
     top=0;q[++top]=x;
           ^