Compilare: user.cpp: In function ‘int main()’: user.cpp:67:13: warning: unused variable ‘j’ [-Wunused-variable] int n,i,j,timp; ^ user.cpp:68:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&n); ^ user.cpp:71:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&v[i].t,&v[i].p); ^