How do I present output neatly?

[The Brahmnic Boy]

In line 7 and 15 I have purposefully put spaces so that the output answers aren't all squished.

How do I ensure that all the answers come in a neat and equal spacing pattern?

I mean, I have heard about <iomanip.h>, but never used it.

  	{
	    d=((b*b)- 4*a*c);
    	if(d>=0)
    	{
	    	x=((-b)+sqrt(d))/(2*a);
    		y=((-b)-sqrt(d))/(2*a);
    		cout<<endl<<"The roots of the quadratic equation are:   "<<x<<"   and    "<<y<<".";
    	}
    	else
    	{
    		long double p,q;
    		d=d*(-1);
    		p=-b/(2*a);
    		q=(sqrt(d))/(2*a);
    		cout<<endl<<"The roots of the quadratic equation are:   "<<p<<" + "<<q<<"i    and    "<<endl<<p<<" - "<<q<<"i";
    	}

[H00G0]

neat and equal spacing pattern

You could use tabulations to space your output evenly. The char you need to use in this case is '\t'.

For more reference see: https://en.cppreference.com/w/cpp/language/escape

[The Brahmnic Boy]

I think you should be seeing the output...
Once I figure out how to do that....