Code:
#include <iostream> 
#include <cmath>
using namespace std;
int 
main (int argc, char** argv)
{
	double a=0.0;
	double b=0.0;
	double c=0.0;
	double num=0.0;

	cout <<"Given this form of equation: aX2 + bX + c = 0"<<endl;
	cout <<"Input the value of a (the coefficient of X2)"<<endl;
	cin>>a;
	cout <<"Input
...