Compilare: user.cpp: In function ‘int main()’: user.cpp:89:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i<(secv.size()-1)) ^ user.cpp:98:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<secv.size();i++) ^ user.cpp:116:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(imax<=(secv.size()-1) && imax>0 &&secv[imax-1].second==secv[imax].second && (secv[imax].first+secv[imax-1].first)>=3) ^ user.cpp:131:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<secv.size();i++) ^ user.cpp:136:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<secv.size();i++) ^ user.cpp: In function ‘void citeste(int&)’: user.cpp:19:36: 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); ^ user.cpp:29:36: 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); ^ user.cpp: In function ‘int main()’: user.cpp:35:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arc.in","r",stdin); ^ user.cpp:36:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arc.out","w",stdout); ^ user.cpp:38:27: 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); ^