View Compilation Error

0_0_26618979_7396.cpp: In function 'int main()':
0_0_26618979_7396.cpp:58:56: error: 'num' was not declared in this scope
   if(fg) printf("Case #%d: Can kill in one move!!!\n", num++);
                                                        ^
0_0_26618979_7396.cpp:59:64: error: 'num' was not declared in this scope
         else printf("Case #%d: Can not kill in one move!!!\n", num++);
                                                                ^