Compilare: user.cpp: In function ‘int main()’: user.cpp:47:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(ind < v[c].size() && v[c][ind] != bruh) ind++; ^ user.cpp:48:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ind != v[c].size()) ^ user.cpp: In function ‘char nextch()’: user.cpp:11:36: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf, BUF_SIZE, 1, fi); ^