Dedication of Duty

Important! Every function should have a singular task to perform and no more.

Examples if (x >= 0) root = square_root(x); do {     cout<<"enter nonnegative number: "<<endl;     cin>>num; } while (num < 0); root = square_root(num); if ( f(x) < 0 )     exit (1); root = square_root(f(x));

Examples if (x >= 0) root = square_root(x); do {     cout<<"enter nonnegative number: "<<endl;     cin>>num; } while (num < 0); root = square_root(num); if ( f(x) < 0 )     exit (1); root = square_root(f(x));

Examples if (x >= 0) root = square_root(x); do {     cout<<"enter nonnegative number: "<<endl;     cin>>num; } while (num < 0); root = square_root(num); if ( f(x) < 0 )     exit (1); root = square_root(f(x));

End of Session