Compilare: main.cpp: In member function 'void RBT::__p2__(std::ostream&, node*)': main.cpp:151:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if (a->left != TNULL) ^~ main.cpp:153:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' os << a->val << " "; ^~ main.cpp: In function 'int main()': main.cpp:6:34: warning: 'n' may be used uninitialized in this function [-Wmaybe-uninitialized] #define for1(n) for(int i = 0; i < n; i ++) ^ main.cpp:504:9: note: 'n' was declared here int n; ^