Compilare: user.cpp: In function ‘void kmp_search(char*, char*)’: user.cpp:48:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < sol.size(); i++){ ^ user.cpp: In function ‘int main()’: user.cpp:58:27: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(pattern,lim,fi); ^ user.cpp:59:26: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(string,lim,fi); ^