Write a C++ program that asks for the number of units sold and computes the total cost of the purchase.

Object:

A software company sells a package that retails for $99. Quantity discounts are given according to the following table:

Quantity Discount :
10-19 20%
20-49 30%
50-99 40%
100 or more 50%

Write a program that asks for the number of units sold and computes the total cost of the purchase.
Input validation: Make sure the number of units is greater than 0. C++ Projects.

Code:

#include<iostream>
#include<conio.h>

using namespace std;
void main()
{
double cost, qunt;
cout<<“\n\t**************************************************************************************\n”;
cout<<“\t\t:S o f t w a r e c o m p a n y sells a p a c k a g e:\n”;
cout<<“\t**************************************************************************************\n\n”;

cout<<“Enter here how many unit sold : “;
cin>>qunt;
if(qunt >0 && qunt <10)
{
cost=qunt*99;
cout<<“\nTotal cost of the purchase is : $”<<cost<<endl;
}
else if(qunt >=10 && qunt <=19)
{
cost=qunt*99*0.2;
cout<<“\nTotal cost of the purchase is : $”<<cost<<endl;
}
else if(qunt >=20 && qunt <=49)
{
cost=qunt*99*0.3;
cout<<“\nTotal cost of the purchase is : $”<<cost<<endl;
}
else if(qunt >=50 && qunt <=99)
{
cost=qunt*99*0.4;
cout<<“\nTotal cost of the purchase is : $”<<cost<<endl;
}
else if(qunt > 100)
{
cost=qunt*99*0.5;
cout<<“\nTotal cost of the purchase is : $”<<cost<<endl;
}
else
{
cout<<“\nInvalid Input!!! Please Enter Greater than 0…”;
}
getch();

}

#include<iostream>
#include<conio.h>

using namespace std;
void main()
{
	double cost, qunt;
	cout<<"\n\t**************************************************************************************\n";
	cout<<"\t\t:S o f t w a r e    c o m p a n y    sells    a    p a c k a g e:\n";
	cout<<"\t**************************************************************************************\n\n";

	cout<<"Enter here how many unit sold : ";
	cin>>qunt;
	if(qunt >0 && qunt <10)
	{
		cost=qunt*99;
		cout<<"\nTotal cost of the purchase is : $"<<cost<<endl;
	}
	else if(qunt >=10 && qunt <=19)
	{
		cost=qunt*99*0.2;
		cout<<"\nTotal cost of the purchase is : $"<<cost<<endl;
	}
	else if(qunt >=20 && qunt <=49)
	{
		cost=qunt*99*0.3;
		cout<<"\nTotal cost of the purchase is : $"<<cost<<endl;
	}
	else if(qunt >=50 && qunt <=99)
	{
		cost=qunt*99*0.4;
		cout<<"\nTotal cost of the purchase is : $"<<cost<<endl;
	}
	else if(qunt > 100)
	{
		cost=qunt*99*0.5;
		cout<<"\nTotal cost of the purchase is : $"<<cost<<endl;
	}
	else
	{
		cout<<"\nInvalid Input!!! Please Enter Greater than 0...";
	}
	getch();

}