please help. This is in C++. not enough time to complete.

We will be determining the postage cost for regular or large envelopes not weighing more than 3 ounces. The chart below shows the rates Weight Not Over (oz 1 Regular 0.55 0.70 0.85 Large 1.00 1.15 1.30 Your program will input values until a weight less than 0 or greater than 3 ounces is entered Postage Calculations What is the weight of the letter, in ounces? 0.3 What is the size of the letter? (L-large, R -regular) r The postage for a regular letter weighing 0.30 ounces is s 0.55 What is the weight of the letter, in ounces? 0.6 What is the size of the letter? (Llarge, R - regular) 1 The postage for a large letter weighing 0.60 ounces is $ 1.00 What is the weight of the letter, in ounces? 1.5 What is the size of the letter? (Llarge, R -regular) 1 The postage for a large letter weighing 1.50 ounces is $ 1.15 What is the weight of the letter, in ounces? 2.1 What is the size of the letter? (Llarge, R -regular) r The postage for a regular letter weighing 2.10 ounces is $ 0.85 What is the weight of the letter, in ounces? 9 The total cost of postage is $ 3.55 You must submit the following electronically to BlackBoard Program development-math, pseudocode, C++ code Source code a working C++ source code