Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:67:30: error: cannot pass objects of non-trivially-copyable type ‘std::string {aka class std::basic_string<char>}’ through ‘...’ printf("%s %ld\n",a[i],b[i]); ^ user.cpp:67:36: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘std::string {aka std::basic_string<char>}’ [-Wformat=] printf("%s %ld\n",a[i],b[i]); ^ user.cpp:38:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("reteta2.in","r",stdin); ^ user.cpp:39:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("reteta2.out","w",stdout); ^ user.cpp:40:18: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(sir + 1); ^