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# Study guide - 1 2 3 4 The formatting of your source code...

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1. The formatting of your source code 2. The use of meaningful identifiers 3. The extent of internal documentation 4. The degree to which an exercises’ specifications are meet Exercise 1: Pen Pricing Create a C++ console application that calculates the price of specially engraved pens based upon the quantity ordered. The vendor charges the following prices based upon the order quantity: 0 - 50 pens 50 cents each 51 - 100 pens 48 cents each 101 - 499 pens 45 cents each 500 or more pens 42 cents each The output of the program should be similar to: 54 pens were ordered at a price of 48 cents each for a total of \$25.92. The program must include variables, decision statements and logical operators. Based on the description of the problem – the price is based on the order quantity, we need to use a selection structure to set up a range for the order quantity. In the beginning of the main function, we need to declare and initialize a variable orderQuanity and prompt the user to enter the orderQuanity. In addition to the orderQuanity, we need to declare the penPrice as double. int orderQuanity = 0; double penPrice = 0.0; cout << "Enter the number of Pens to order:" ; cin >> orderQuanity; Our program then need to perform a selection and assign value to penPrice based on the different conditions. if (orderQuanity >= 0 && orderQuanity <= 50) penPrice = .50; else if (orderQuanity >= 51 && orderQuanity <= 100) penPrice = .48; else if (orderQuanity >= 101 && orderQuanity <= 499) penPrice = .45; else

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if (orderQuanity >= 500) penPrice = .42; At the end of the program, we just need to display our program output like this: 54 pens were ordered at a price of 48 cents each for a total of \$25.92. cout << orderQuanity << " pens were ordered at a price of " << penPrice << " cents each for a total of \$" << penPrice * orderQuanity << endl; here is the program #include <iostream> #include <iomanip> using namespace std; int main() { //variable declaration double orderTotal = 0.00; double price = 0.42; // declare and enter quantity of pens int penCount; printf("Enter amount of pens you would like to order: "); cin >> penCount; if((penCount>0 && penCount <50)){ price = .50; (orderTotal = price * penCount); }else if((penCount>51 && penCount <100)){ price = .48; (orderTotal = price * penCount); }else if((penCount>100 && penCount <499)){ price = .45; (orderTotal = price * penCount); }else{ price = .42; (orderTotal = price * penCount); }
printf("The total for your order is: \$%.2f, Quantity: %i,Price: %.2f\n", orderTotal,

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