http://www.cplusplus.com/doc/tutorial/control/
First ask the user to input the menu number from the listed menu,then put that number in a switch statement that prints for different numbers different output. https://www.geeksforgeeks.org/switch-statement-cc/
Try to write a problem on you own and put your code what you have done and if you have mistakes somebody would certainly help you,but I do not believe anyone is going to do other people homeworks and that kind of stuff.
some quick direction on an easy design
struct amenu
{
string words;
double price;
};
amenu menu[5];
menu[1].words = "Lunch Special";
menu[1].price = 10.59;
… //add all the items.
menu[0].words = "Invalid Choice";
…//
cin >> choice.
switch(choice)
case 1: case 2: case 3: case 4:
cout << "you chose " << menu[choice].words << endl;
cout << "your price " << menu[choice].price * 1.08 << endl;
break;
default: cout << menu[0].words << endl;
also, this best thing you can learn from this is that programming takes time. Do not let yourself get short on time again. You can swap the struct and array of struct for just 2 arrays that are correlated by index if you want, its less code but not a great design (works here but falls apart for bigger programs).