Compilare: user.cpp: In function ‘int main()’: user.cpp:79:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<s.size(); i++) { ^ user.cpp:94:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < text.size()) { ^ user.cpp:95:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (j < s.size() && i < text.size() && s[j] == text[i]){ ^ user.cpp:95:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (j < s.size() && i < text.size() && s[j] == text[i]){ ^ user.cpp:99:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (j == s.size()) { ^ user.cpp:71:39: 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:72:41: 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); ^