Compilare: user.cpp: In function ‘int main()’: user.cpp:73:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < V.size() && ok; i++) ^ user.cpp:88:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < V.size(); i++){ ^ user.cpp:37:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d%d", &p, &m, &n); ^ user.cpp:108:22: warning: ‘vv’ may be used uninitialized in this function [-Wmaybe-uninitialized] fputc(vv, fo); ^