Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:27:24: error: ‘memset’ was not declared in this scope memset(s, 0, sizeof(s)); ^ user.cpp:43:14: error: ‘strlen’ was not declared in this scope if(strlen(s) >= 2) ^ user.cpp:35:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("cifra.in", "r", stdin); ^ user.cpp:36:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("cifra.out", "w", stdout); ^