Question

write in C++

Problem 1: Mobile Service Provider

A cell phone service provider has three different subscription packages for its customers.

Package A: For $39.99 per month 450 minutes are provided. Additional minutes are $0.45 per minute.
Package B: For $59.99 per month 900 minutes are provided. Additional minutes are $0.40 per minute.
Package C: For $69.99 per month unlimited minutes provided.

Write a program that calculates a customer’s monthly bill. It should ask which package the customer has purchased and how many minutes were used. It should then display the total amount due. Print out "Invalid Package!" if a package other than A, B, or C is entered. Print out "Invalid Minutes!" if negative minutes are entered.

Problem 2: Output Numbers from 1 to N

Write a program that prints out every other number between 1 and N where N is entered by the user. The numbers must be separated by a comma and a space. The last number must not have a comma following it. The program is repeated until a number smaller than 1 is entered at which point the program outputs "Goodbye!"

Example:
Enter N: 7
1, 3, 5, 7
Enter N: 10
1, 3, 5, 7, 9
Enter N: -1
Goodbye!

Problem 3: Inferred Numbers

The following formula produces a sequence of numbers. It starts out with three initial whole numbers a, b, and c. Each following number is represented by multiplying a and b and dividing the result by c. The sequence ends once it reaches zero. For example, an initial set of 3, 4, and 5 would produce a sequence of: 3, 4, 5, 2, 10, 1, 20, 0

Write a program that prompts the user to enter three integers. The program then uses a loop to continuously compute the next integer based on the three previous integers according to the aforementioned formula.

Answer 1

Problem 1: Mobile Service Provider

#include<iostream>

using namespace std;

int main()
{
float cost;
char ch;
int mintues;
cout<<"Enter package you have purchased(type A, B or C): ";
cin>>ch;

cout<<"Enter how many mintues were used: ";
cin>>mintues;

if(ch=='A')
{
   if(mintues<0)
   {
       cout<<"Invalid Minutes!\n";
   }
   else if(mintues<=450)
   {
       cost=39.99;
       cout<<"Cost is: "<<cost;
   }
   else
   {
       cost=39.99+(mintues-450)*0.45;
       cout<<"Cost is: "<<cost;
   }
  
}
else if(ch=='B')
{
   if(mintues<0)
   {
       cout<<"Invalid Minutes!\n";
   }
   else if(mintues<=900)
   {
       cost=59.99;
       cout<<"Cost is: "<<cost;  
   }
   else
   {
       cost=59.99+(mintues-900)*0.40;
       cout<<"Cost is: "<<cost;
   }
}
else if(ch=='C')
{
   if(mintues<0)
   {
       cout<<"Invalid Minutes!\n";
   }
   else
   {
           cost=69.99;
           cout<<"Cost is: "<<cost;
   }

  
}
else
{
   cout<<"Invalid Package!\n";
}

return 0;
}