Compilare: user.cpp: In function ‘int main()’: user.cpp:36:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(f == string::npos) ^ user.cpp:14:15: warning: unused variable ‘MAX’ [-Wunused-variable] const int MAX = 1000; ^ user.cpp:16:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("strmatch.in", "r", stdin); ^ user.cpp:17:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("strmatch.out", "w", stdout); ^