Compilare: main.cpp: In function 'int main()': main.cpp:23:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i < pattern.size()) ~~^~~~~~~~~~~~~~~~ main.cpp:45:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i < text.size()) ~~^~~~~~~~~~~~~ main.cpp:53:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j == pattern.size()) ~~^~~~~~~~~~~~~~~~~ main.cpp:59:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(i < text.size() && pattern[j] != text[i]) { ~~^~~~~~~~~~~~~ main.cpp:13:37: 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); ^ main.cpp:14:39: 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); ^