Hello,

The errors are at the bottom of the post, and they are about the error: non-lvalue.

I am writing a program which allows the user to choose a beverage, sandwich and side order from a menu. After the choices are made, the program should do the following:

* list the items chosen with the cost of each item

* the sub-total of just the items

* the total cost including tax (use 6.5% for the tax).

The following are the items and prices I will include:

Beverages:

1: Soda: $0.99

2: Milk: $0.79

3: Juice: $1.29

Sandwiches:

1: Hamburger: $0.99

2: Cheeseburger: $1.09

3: Chicken Sandwich: $2.59

Side Orders:

1: French Fries: $0.89

2: Onion Rings: $1.09

3: Corn Chips: $0.59

The output should look something like this (it must include the items and prices, the sub-total, the tax, and the total cost including tax)

Soda: $0.99

Hamburger: $0.99

French Fries: $0.89

Total of food: $2.87

Tax: $0.19

Total for order: $3.06

That is what I have.Code:#include <iostream> #include <string> int main () { int drink; int sandwich; int side; double price; double soda; double milk; double juice; double hamburger; double cheeseburger; double chicken; double fries; double rings; double chips; soda = .99; milk = .79; juice = 1.29; hamburger = .99; cheeseburger = 1.09; chicken = 2.59; fries = .89; rings = 1.09; chips = .59; cout << "Pick Drink & input coresponding number" << endl; cout << "1: Soda $0.99" << endl; cout << "2: Milk $0.79" << endl; cout << "3: Juice $1.29" << endl; cin >> drink; if (drink == 1) {price + soda = price;} if (drink == 2) {price + milk = price;} if (drink == 3) {price + juice = price;} cout << "Pick Sandwich & input coresponding number" << endl; cout << "1: hamburger $0.99" << endl; cout << "2: cheeseburger $1.09" << endl; cout << "3: chicken $2.59" << endl; cin >> sandwich; if (sandwich == 1) {price + hamburger = price;} if (sandwich == 2) {price + cheeseburger = price;} if (sandwich == 3) {price + chicken = price;} cout << "Pick Side & input coresponding number" << endl; cout << "1: fries $0.89" << endl; cout << "2: onion rings $1.09" << endl; cout << "3: corn chips $0.59" << endl; cin >> side; if (side == 1) {price + fries = price;} if (side == 2) {price + rings = price;} if (side == 3) {price + chips = price;} if (drink == 1) cout << "Soda: $0.99" << endl; if (drink == 2) cout << "Milk: $0.79" << endl; if (drink == 3) cout << "Juice: $1.29" << endl; if (sandwich == 1) cout << "Hamburger: $0.99" << endl; if (sandwich == 2) cout << "Cheeseburger: $1.09" << endl; if (sandwich == 3) cout << "Chicken: $2.59" << endl; if (side == 1) cout << "Fries: $0.89" << endl; if (drink == 2) cout << "Onion Rings: $1.09" << endl; if (drink == 3) cout << "Chips: $0.59" << endl; cout << "Price: " << price << endl; cout << "Tax: " << price * .065 << endl; cout << "Total: " << price * 1.065 << endl; return 0; }

Here are the errors that display:

I do not know what non-lvalue means, so it would be great if someone could help me out there, it would be greatly appreciated!Code:menu.cpp: In function `int main()': menu.cpp:33: non-lvalue in assignment menu.cpp:35: non-lvalue in assignment menu.cpp:37: non-lvalue in assignment menu.cpp:45: non-lvalue in assignment menu.cpp:47: non-lvalue in assignment menu.cpp:49: non-lvalue in assignment menu.cpp:57: non-lvalue in assignment menu.cpp:59: non-lvalue in assignment menu.cpp:61: non-lvalue in assignment

Thank you!