C++ program for implementation of class

AIM:
A program to solve a quadratic equation, using OOP techniques.

ALGORITHM:

1) Start the process
2) Invoke the classes
3) Get the input for a,b,c;
4) Call the function getinfo() and display()
5) Check if a=0
a) True : compute c/b;
i) Print the value of a/c;
b) False: compute b*b-4*a*c;
i) If ( b*b-4*a*c)=0
ii) Call img();
iii) Otherwise : call real(a,b,c);
6) Stop the process

PROGRAM:

	#include<iostream.h>
	#include<conio.h>
		class equation
		{
			private:float a,b,c;
			public: void getinfo(float  a, float b,float c );
				void display( );
				void equal(float  a, float b);
				void imag( );
				void real(float a,float b,float c);
		};
		void  equation :: getinfo(float aa,float bb,float cc)
		{
	                a=aa;
			b=bb;
		        c=cc;
		}
		void equation::display( )
		{
			cout<<endl;
			cout<<”a=<<a<<’\t’;
			cout<<”b=<<b<<’\t’;
			cout<<”c=<<c<<endl;
		}		
 
void equation ::equal (float a,float b)
		{
			float x;
			x = -b/(2*a);
			cout<<”Roots are equal “<<x<<endl;
		}
		void equation :: imag( )
		{
			cout<<”Roots are imaginary”;
		}
		void equation :: real(float a,float b,float det)
		{
			float x1,x2,temp;
			temp = sqrt(det);
			x1= (-b + temp)/(2*a);
			x2 = (-b –temp)/(2*a);
			cout<<”Roots are real”;
			cout<<”x1=<<x1<<endl;
			cout<<”x2 =<<x2<<endl;
		}
		void main( )
		{
			class equation e;
			float aa,bb,cc;
			clrscr( );
			cout<<”Enter the three numbers”;
			cin>>aa>>bb>>cc;
			e.getinfo(aa,bb,cc);
			e.display( );
			if(aa = =0)
			{
				float temp;
				temp = cc/bb;
				cout<<” Linear Roots”<<temp<<endl;
			}
			else
			{
				float det;
				det = (bb*bb – 4*aa*cc);
				if(det = =0)
				e.equal(aa,bb);
				else if (det<0 )
				          e.imag( );
				else 
				          e.real(aa,bb,cc );
			}
			getch( );
		}

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OUTPUT:
Enter the three numbers 2 4 1
Roots are imaginary
X1= – 0.292893
X2= – 1.707107


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