C++ Programs to Accompany Programming Logic and Design 8th Edition by Jo Ann Smith

Exercise 11

Making Multiple Comparisons in Decision Statements
In this exercise, you use what you have learned about OR logic to study a complete C++ program that uses OR logic in a decision statement. This program was written for a marketing research firm that wants to determine if a customer prefers Coke or Pepsi over some other drink. Take a few minutes to study the code that follows, and then answer Questions.
// CokeOrPepsi.cpp - This program determines if a customer// prefers to drink Coke or Pepsi or some other drink.#include #include using namespace std;int main(){string customerFirstName; // Customer's first namestring customerLastName; // Customer's last namestring drink = ""; // Customer's favorite drinkcout ? "Enter customer's first name: ";cin ? customerFirstName;cout ? "Enter customer's last name: ";cin ? customerLastName;cout ? "Enter customer's drink preference: ";cin ? drink;if(drink == "Coke" || drink == "Pepsi"){cout ? "Customer First Name: " ? customerFirstName? endl;cout ? "Customer Last Name: " ? customerLastName? endl;cout ? "Drink: " ? drink ? endl;}elsecout ? customerFirstName ? " " ? customerLastName? " does not prefer Coke or Pepsi." ? endl;return 0;}
What is the exact output from this program when
if(drink == "Coke" || drink == "Pepsi")
is changed to
if(drink == "Coke" || drink == "Pepsi" || drink == "coke" || drink == "pepsi")
and the customer's name is Chas Matson, and the drink is coke? What does this change allow a user to enter?