Compilare: main.cpp: In function 'void kmp()': main.cpp:51:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < 1000 && i < matches.size(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:56:36: 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:57:38: 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); ^ main.cpp:59:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s %s", p, t); ^