Compilare: user.cpp: In function ‘void buildconfig(std::vector<int>&)’: user.cpp:40:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(conf.size()==n) ^ user.cpp: In function ‘void buildmatrix(std::vector<int>&)’: user.cpp:60:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(adauga.size()==n) ^ user.cpp: In function ‘int main()’: user.cpp:92:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("matrice6.in", "r", stdin); ^ user.cpp:93:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("matrice6.out", "w", stdout); ^ user.cpp:94:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^