Question

- Delcare variable data type as decimal (5 variables needed) count, price, subtotal, tax, total

- Write a do while loop, if the price is not -1, loop continues show count number enter price get subtotal increase count

- Calculate tax, total

- Display total count, subtotal, tax, total

Answer 1

Note:

Could you please check the output.Any modifications needed let me know.Thank you.

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#include <iostream>
using namespace std;

int main()
{
  
   //Declaring variables
double count=0.0,price,subtotal=0.0,tax,total;

//Getting the price entered by the user
   cout<<"Enter price : $";
   cin>>price;
   /* if the first price entered by the user
       * is equal to -1 .then program exit
       */
   if(price==-1)
   {
       exit(0);
       cout<<":: Program Exit ::"<<endl;
       }
do
{
   //Displaying the count value
   cout<<"Count :"<<++count<<endl;
  
   //calculating the subtotal
   subtotal+=price;
  
   //getting the price
cout<<"Enter price : $";
   cin>>price;   
  
   }while(price!=-1);
  
   //Calculating the tax
   tax=subtotal*0.05;
  
   //calculating the total
   total=subtotal+tax;
  
   //displaying the output
   cout<<"\nTotal Count ="<<count<<endl;
   cout<<"Subtotal = $"<<subtotal<<endl;
   cout<<"Tax = $"<<tax<<endl;
   cout<<"Total = $"<<total<<endl;
return 0;
}

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Output:

___________Thank You