初學者的C++練習題——（二）可樂販售機

Cola Machine

Requires:
variables, data types, and numerical operators
basic input/output
logic (if statements, switch statements)

Write a program that presents the user w/ a choice of your 5 favorite beverages (Coke, Water, Sprite, ... , Whatever).
Then allow the user to choose a beverage by entering a number 1-5.
Output which beverage they chose.

★ If you program uses if statements instead of a switch statement, modify it to use a switch statement.
If instead your program uses a switch statement, modify it to use if/else-if statements.

★★ Modify the program so that if the user enters a choice other than 1-5 then it will output "Error. choice was not valid, here is your money back."

 

#include <iostream> using namespace std; string BeverageNames[5] = { "Coke", "Water", "Sprite", "Beer", "Iced Tea" }; int main() { cout << "Choose from following beverages: " << endl; for (int i=0; i<5; i++) { cout << i+1 << ") " << BeverageNames[i] << endl; } cout << "Your choice (1-5)? "; int choice; cin >> choice; if ( choice < 1 || choice > 5) { cout << "Error. choice was not valid, here is your money back." << endl; } else { cout << "You choosed " << BeverageNames[choice-1] << "." << endl; } system("pause"); }