Question

c++ (visual studio)

A mail order house sells five different products whose product numbers and retail prices are:

product 1 - $2.98, product 2 - $4.50, product 3 - $9.98, product 4 - $4.49, product 5 - $6.87.

1. Write a program that reads a series of pairs of numbers (from user). That is, each time it reads the pairs of values as follows:

i) product number

ii) quantity of that product sold

2. Your program should use a switch statement to determine the retail price for each product.
3. Your program should calculate and display the total retail value of all products sold.
4. Use a sentinel-controlled while loop so user can indicate when the program should stop looping and display the final results.

Answer 1

NOTE:
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Input to the program is product id and price which is seprated by a space. To end the program enter ctlr+D which is EOF

//######################## PGM START ##############################

#include<iostream>
using namespace std;

int main(){
   double product[5]={0};
   int id;
   double qty=0.0,total=0.0;
   //request id and quqntity of product from users
   cout<<"Enter product id and quantity (ctrl+D to exit): ";
   //read id and quantity untill user enter EOF(ie ctrl+d)
   while(cin>>id>>qty){
       switch(id){
           case 1: product[0]+=(qty*2.98);
                   break;
                  
           case 2: product[1]+=(qty*4.50);
                   break;
                  
           case 3: product[2]+=(qty*9.98);
                   break;
                  
           case 4: product[3]+=(qty*4.49);
                   break;
                  
           case 5: product[4]+=(qty*6.87);
                   break;
                  
           default: cout<<"Wrong product id!!!!\n";
                   break;
       }
   }
   //print each product retail price
   for(int i=0;i<5;i++){
       cout<<"Product "<<(i+1)<<": $"<<product[i]<<"\n";
       //finding the total retail price
       total+=product[i];
   }
   //printin the total retail price
   cout<<"\n\tTotal retail price: $"<<total<<"\n";
  
   return 0;
}

//###################### PGM END #######################################

OUTPUT
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