Compilare: user.cpp: In function ‘void insert(int, node*&)’: user.cpp:49:16: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if ((bsheight(p->left) - bsheight(p->right))==2) ^ user.cpp:57:16: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if ((bsheight(p->right) - bsheight(p->left))==2) ^ user.cpp: In function ‘int main()’: user.cpp:245:18: warning: variable ‘root1’ set but not used [-Wunused-but-set-variable] nodeptr root,root1,min,max; ^ user.cpp:245:24: warning: unused variable ‘min’ [-Wunused-variable] nodeptr root,root1,min,max; ^ user.cpp:245:28: warning: unused variable ‘max’ [-Wunused-variable] nodeptr root,root1,min,max; ^