I need some assistance

[ryanmac75]

Write your question here.
Hi
I am new to programming and I am having some difficulty with my latest assignment.
An international phone company has 3 different subscription packages.

A 19.95 per month, 5 hours of talk time, .08 cents per minute overage
B 32.95 per month, 10 hours of talk time, .05 cents per minute of overage
C 45.95 per moth unlimited talk

Write a program that calculates a customers bill. It should prompt for which package (A,B, or C) the customer has.Only if the user indicates that they have package A or B should the program prompt for and get the number of minutes used.

If input is not valid an error message should be displayed and the user given a second chance to enter a value--package types can only be A,B, or C. minutes per month cannot be less than 0

any help would be appreciated I am completely stuck
Thanks

  // Assignment 6, Internet/Phone access

#include <iostream>
#include <iomanip>

using namespace std;

int main()

{
	const double PACKAGE_A = 19.95;
	const double PACKAGE_B = 32.95;
	const double PACKAGE_C = 45.95;
	double minutes;
	double total;
	double overage;
	char package;

	cout << fixed << showpoint << setprecision(2);

	cout << "Please indicate which package was purchased by entering A, B, or C " << endl;
	cin >> package;
	
	if (package == 'A')
	{
		cout << "How many minutes were used?" << endl;
		cin >> minutes;
		{
			if (minutes > 300)
			{
				overage = (minutes - 300) * .08;
				total = overage + PACKAGE_A;
				cout << "Your toatal is $ " << total << endl;
			}
			else
				cout << "Your toatal is $ " << PACKAGE_A << endl;
		}
	}
	
			
		if (package == 'B')
			cout << "How many minutes were used?" << endl;
			cin >> minutes;
			{
				if (minutes > 600)
				{
					overage = (minutes - 600) * .05;
					total = overage + PACKAGE_B;
					cout << "Your toatal is $ " << total << endl;
				}
				else
				{
					cout << "Your toatal is $ " << PACKAGE_B << endl;
				}
			}
if ( package == 'C')
		{
		cout << "Your toatal is $ " << PACKAGE_C << endl;
		}
		else 
		cout << "Invalid Entry" << endl;
			
	return 0;
}

		 

[48T7M4Gy]

Which part are you stuck on?

[ryanmac75]

this was supposed to be the end but i forgot to copy it. I edited the code above

if ( package == 'C')
{
cout << "Your total is $ " << PACKAGE_C << endl;
}
else
cout << "Invalid Entry" << endl;

return 0;
}


I cant get option C to work and I can not figure out how to make it give a second chance for input

[48T7M4Gy]

The switch case control structure is ideal for this but you can do it by using while alone to 'wrap' around the group of if tests with a while test, like this in pseudocode:

while( test for keepgoing true )
{
   input a,b or c

   if a etc etc

   if b etc etc

   if c etc etc

   input do you want to keepgoing

}

[ryanmac75]

We just started the switch case stuff in the book and class but I am not that comfortable with yet. Now that I know it will work I will try it.

Thanks

[48T7M4Gy]

Give it a go and get back if you have any problems. I wasn't exactly clear and just to make sure, you will still need the while loop, but the switch with 'default:' set up correctly will handle your if's cascade in a more efficient way. :)

[ryanmac75]

I got it to work a lot better now. I just dont know how to give the user a second chance to enter a value.
This is what I have

// Assignment 6, Internet/Phone Access

#include <iostream>
#include <iomanip>

using namespace std;

int main()

{
double packageA = 19.95;
double packageB = 32.95;
double packageC = 45.95;
double minutes, total, overage;
char package;

cout << fixed << showpoint << setprecision(2);

cout << "Please indicate which package was purchased by entering A, B, or C: " << endl;
cin >> package;
switch (package)

{
case 'A': cout << "How many minutes were used? " << endl;
cin >> minutes;
overage = (minutes - 300) * .08;
total = overage + packageA;
cout << "Your total is $ " << total << endl;
break;

case 'B': cout << "How many minutes were used? " << endl;
cin >> minutes;
overage = (minutes - 600) * .05;
total = overage + packageB;
cout << "Your total is $ " << total << endl;
break;

case 'C': cout << "Your total is $ " << packageC << endl;
break;

default: cout << "You did not enter a valid choice " << endl;
}
return 0;
}

[48T7M4Gy]

You need to refer back to my pseudo code. It's all there.

[ryanmac75]

OK....Thanks again