Compilare: user.cpp: In function ‘void euler(int)’: user.cpp:36:13: warning: unused variable ‘num’ [-Wunused-variable] int num=v[vec].size(); ^ user.cpp:20:17: warning: unused variable ‘j’ [-Wunused-variable] int nod,vec,j; ^ user.cpp: In function ‘int main()’: user.cpp:45:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&n,&m); ^ user.cpp:48:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&x,&y); ^