Non-lvalue in Program Question
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
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;
}
End
That is what I have.
Here are the errors that display:
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
End
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!
Thank you!
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
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;
}
End
That is what I have.
Here are the errors that display:
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
End
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!
Thank you!
What do you mean at this condition?
Maybe you wanted to write
And yet several places like that.
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Maybe you wanted to write
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And yet several places like that.
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