An online retailer sells five products whose retail prices are as follows: product 1, $$2.98; product 2, $4.50; product 3, $9.98; product 4, $4.49 and product 5, $6.87. Write an application that reads a series of pairs of numbers as follows: a) product number b) quantity sold Your program should use a switch statement to determine the retail price for each product. It should calculate and display the total retail value of all products sold. Use a sentinel-controlled loop to determine when the program should stop looping and display the final results.

#include <stdio.h>  

int main()

  {

  float list[5]={2.98,4.50,9.98,4.49,6.87   };

  int producttype=0;

  int qty;

  double total=0;

  printf("Below is the List of Products with Price\n");

  for(int i=0;i<5;i++)

  {

      printf("Product%d Price is %.2f\n",i+1,list[i]);

  }

  printf("\nEnter pairs of Product Numbers and Its Quantities.\n");

  printf("Enter -1 for the Product Number to end input.\n");

  while(true){

      scanf("%d",&producttype);

      if(producttype == -1)

      {

      break;  

      }

      scanf("%d",&qty);

      switch(producttype){

          case 1:

              total=total+qty*2.98;

              break;

          case 2:

              total=total+qty*4.50;

              break;

          case 3:

              total=total+qty*9.98;

              break;

          case 4:

              total=total+qty*4.49;

              break;

          case 5:

              total=total+qty*6.87;

              break;

          default:

              printf("Wrong Product Id\n");

              break;    

      }

 }

  printf("Sum of the purchases is :%.2f\n",total);

}

Output:-

leaning back,   no eye contact,   fidgeting in the seat