Compilare: user.cpp: In function ‘int Calc()’: user.cpp:58:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(strlen(sir[i] + 1) < elem) { ^ user.cpp: In function ‘int main()’: user.cpp:15:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("search.in","r",stdin); ^ user.cpp:16:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("search.out","w",stdout); ^