Compilare: user.cpp: In function ‘void afisare()’: user.cpp:53:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i< raspuns.size();++i) ^ user.cpp:55:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0;j<raspuns[i].size(); ++j) ^ user.cpp: In function ‘void citire()’: user.cpp:14:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:18:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^ user.cpp: In function ‘int main()’: user.cpp:62:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ctc.in", "r", stdin); ^ user.cpp:63:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ctc.out", "w", stdout); ^