Eroare de compilare: user.cpp:16:14: error: ISO C++ forbids declaration of ‘Arbint2d’ with no type [-fpermissive] Arbint2d(){ ^ user.cpp: In member function ‘int Arbint2D::Arbint2d()’: user.cpp:19:5: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int Query(Arbint*, int, int, int, int, int, int)’: user.cpp:34:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(y<=leftY) ^ user.cpp:39:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(y>=rightY) ^ user.cpp: In function ‘int main()’: user.cpp:102:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mindist.in","r",stdin); ^ user.cpp:103:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mindist.out","w",stdout); ^ user.cpp:105:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:109:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^