Question

BCS 215 (Unix Operating Systems)

Create a bash shell script that displays a coffee vending machine menu and asks the user to make a choice -

1. Print "Please enter your choice: decaf|regular|latte|cappuccino"

2. Depending on the user input, print out the related price -

decaf: 2 dollars

regular: 2 dollars

latte: 3 dollars

cappuccino: 3 dollars

For anything else, please display "Please make a valid choice."

3. Upon a successful execution of the script, display "Thank you for using the coffee vending machine!" (Hint: use 'trap')

----------------------------
For example:

If the user enters "regular", the program prints -

2 dollars

Thank you for using the coffee vending machine!

Answer 1

#include <iostream>

using namespace std;
void lima(string &name,int &age){
   cout<<"Enter name: ";
   cin>>name;
   int flag=0;
   for(int i=0;i<3;i++){
       cout<<"Enter age between 0-100: ";
       cin>>age;
       if(age>=0 && age<=100){
           flag=1;
           break;
       }
       cout<<"Error: Invalid age"<<endl;
   }
   if(!flag)
       age=0;
}
int main()
{
string name;
int age;
lima(name,age);
cout<<"Name : "<<name<<endl;
cout<<"Age : "<<age<<endl;
return 0;
}

#include <iostream> 10 using namespace std; void lima (string &name,int &age){ 11 12 cout<<"Enter name: 13 cin>>name; 14 int flag-0; for(int i-0;i<3; i++){ cout<<"Enter age between 0-100: cin>>age; if(age>-0 && age-100){ flag-1; break; } cout<<"Error: Invalid age"<<endl; 15 16 17 18 19 20 21 22 23 24 if (!flag) age 0; 25 26 27 int main) 29 f 28 string name; int age; 30 31 lima (name, age); cout<<"Name cout<<"Age : return 0; 32 '<<name << end l; '<<age<<endl; 33 34 35 36} 37 Enter name: Uday Enter age between 0-100: 120 Error: Invalid age Enter age between 0-100: 110 Error: Invalid age Enter age between 0-100: 55 Name: Uday Age 55 m.m.m.m.m.m m.m

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