A telephone company charges to cents per minutefor all calls outside the customers area code that last over 20 minutes

A telephone company charges to cents per minutefor all calls outside the customers area code that last over 20 minutes .All other calls are 13 percents minute.Fields for each call include customer area code (three digits),customer phone number (seven digits),called area code (three digits),called number(seven digits)and called time in minutes(four digits).Display the customer area code,customer phone number,called area code,called number,called time in minutes and the total charge.Draw the flowchart for this program.

The Correct Answer and Explanation is:

To solve this problem, we need to calculate call charges based on duration and area code comparison, and then display the relevant details along with the calculated charge.

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🔧 Problem Breakdown:

• Input Fields:
• Customer Area Code (CAC)
• Customer Phone Number (CPN)
• Called Area Code (CAAC)
• Called Number (CAN)
• Call Time in Minutes (CTM)
• Rates:
• If the called area code ≠ customer area code AND call duration > 20 minutes:
  ➤ Charge = 20 cents/minute
• Else:
  ➤ Charge = 13 cents/minute
• Output Fields:
• CAC, CPN, CAAC, CAN, CTM, Total Charge

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✅ Correct Answer (Flowchart Logic):

1. Start
2. Input: CAC, CPN, CAAC, CAN, CTM
3. Decision: Is CAAC ≠ CAC AND CTM > 20?

• Yes → Rate = 0.20
• No → Rate = 0.13

1. Calculate: Charge = CTM × Rate
2. Display:

• CAC, CPN, CAAC, CAN, CTM, Charge

1. End

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📊 Flowchart Overview (Text Description):

[Start]
   ↓
[Input: CAC, CPN, CAAC, CAN, CTM]
   ↓
[CAAC ≠ CAC AND CTM > 20?] → Yes → [Rate = 0.20]
                     ↓ No               ↓
                  [Rate = 0.13] ←───────
                        ↓
           [Charge = CTM × Rate]
                        ↓
[Display: CAC, CPN, CAAC, CAN, CTM, Charge]
                        ↓
                     [End]

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🧠 Explanation (300+ words):

This program is designed to process telephone call data and compute the charges based on two key criteria: whether the call is made outside the customer’s area code, and whether the call duration exceeds 20 minutes.

The fields provided include both caller and receiver information (area codes and phone numbers), as well as the total call time in minutes. The charge is determined by checking two conditions:

1. Long-Distance Check – A call is considered long-distance if the called area code is not equal to the customer’s area code.
2. Duration Check – The rate of 20 cents per minute only applies when such a call lasts more than 20 minutes.

If both conditions are true, the program multiplies the number of minutes by \$0.20 to calculate the total charge. Otherwise, a standard rate of \$0.13 per minute is used, whether the call is local or shorter.

The flowchart is designed logically, starting with reading inputs, evaluating the conditions using a decision box, assigning the appropriate rate, calculating the charge, and finally displaying all necessary details. This design ensures clarity, simplicity, and accurate computation.

Such a program is particularly useful for billing departments in telecom companies to automate and validate customer call billing. It ensures transparency in how charges are calculated and allows the system to scale up for large numbers of calls.