View Compilation Error

0_0_39609592_24892.cpp: In function 'int main()':
0_0_39609592_24892.cpp:47:44: error: 'num' was not declared in this scope; did you mean 'enum'?
   47 |                 memset(tag,-1,sizeof(tag));num=0;
      |                                            ^~~
      |                                            enum