Compilare: user.cpp: In function ‘void afisare()’: user.cpp:59:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < vec.size(); ++i) ^ user.cpp: In function ‘void citire()’: user.cpp:106:34: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] sir_init[strlen(sir_init) - 1] = NULL; ^ user.cpp:111:24: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] sir[strlen(sir) - 1] = NULL; ^ user.cpp:101:25: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(sir_init,N,stdin); ^ user.cpp:102:20: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(sir,N,stdin); ^ user.cpp: In function ‘int main()’: user.cpp:121:36: 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); ^ user.cpp:122:38: 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); ^