Compilare: user.cpp: In function ‘void afisare()’: user.cpp:74:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0 ; j < componente[i].size() ; ++j) ^ user.cpp: In function ‘void citire()’: user.cpp:98:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &n, &m); ^ user.cpp:104:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &x, &y); ^ user.cpp: In function ‘int main()’: user.cpp:114:36: 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:115:38: 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); ^