Compilare: user.cpp: In function ‘bool exista(int)’: user.cpp:73:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p[i].size() == pos) { ^ user.cpp:75:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(size_t j = 0; ok && j < pos; ++j) ^ user.cpp: In function ‘void citire()’: user.cpp:31:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:34:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &nod1, &nod2); ^ user.cpp: In function ‘int main()’: user.cpp:104:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("avd.in", "r", stdin); ^ user.cpp:105:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("avd.out", "w", stdout); ^ user.cpp:108:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &teste); ^