1. Write a pseudo code before starting your program ( do not use SWITCH, replace it with IF structures )1.1 Draw a flowchart for your program based on your pseudo code 2. Identify your constants 3. Your input will come from a text file of at least 15 customers 3.1 Input file format – customerType accountNumber premiumChannels( i.e residential example: R12345 5 , business example B12345 16 8 ) 4. Precision should be two decimal places 5. Calculate the running average for residential and business customer spending6. Print all customer’s bill to a single file and the end of the file you should have the average summary for each customer type. 6.1 Pay attention to details when you formatting your output I also have the original file ready.