Compilare: user.cpp: In function ‘int lcp(int, int)’: user.cpp:59:12: warning: unused variable ‘step’ [-Wunused-variable] int j, step, l = 0; ^ user.cpp: In function ‘int main()’: user.cpp:74:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("ghicit.in", "r", stdin); ^ user.cpp:75:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("ghicit.out", "w", stdout); ^ user.cpp:77:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%s", s); ^