Compilare: user.cpp: In member function ‘int myTree::getValueOnPosition(int)’: user.cpp:167:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<qNodes.size();i++){ ^ user.cpp:172:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<qNodes.size();i++){ ^ user.cpp: In function ‘int main()’: user.cpp:192:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("kinder.in","r",stdin); ^ user.cpp:193:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("kinder.out","w",stdout); ^ user.cpp:195:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&n,&m,&t); ^ user.cpp:199:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&op); ^ user.cpp:201:63: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&child_,&type_,&color_,&howMany_); ^ user.cpp:205:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&child_,&howMany_); ^ user.cpp:208:56: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&a_,&b_,&color_,&howMany_); ^