Compilare: user.cpp: In function ‘void equil(const int&, const int&)’: user.cpp:29:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[ran][buc-1].dq.size()<=mar) return; ^ user.cpp: In function ‘void add(const int&, int, const int&)’: user.cpp:55:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[ran][buc].dq.size()<loc) ^ user.cpp:62:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[ran][buc].dq.size()>mar) equil(ran,buc+1); ^ user.cpp: In function ‘void citeste(int&)’: user.cpp:13:45: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,DIM,stdin),poz=0; ^ user.cpp:18:45: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,DIM,stdin),poz=0; ^ user.cpp: In function ‘int main()’: user.cpp:77:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("grid.in","r",stdin); ^ user.cpp:78:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("grid.out","w",stdout); ^