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  1. //Zachary Abdollahi				CS1A			            Chapter 6, P.369, #1
  2. //
  3. /*******************************************************************************
  4.  * CALCULATE MARKUP
  5.  * _____________________________________________________________________________
  6.  * This program asks the user for an item's wholesale cost and its markup 
  7.  * percentage, then displays the item's retail price.
  8.  * 
  9.  * The program uses three functions:
  10.  *	   getWholesale		: prompts for the wholesale cost, rejects negative 
  11.  *						  values, and returns the cost
  12.  *	   getMarkup	    : prompts for the markup percentage, rejects negative
  13.  *						  values, and returns the percentage
  14.  *	   calculateRetail  : receives the wholesale cost and markup percentage 
  15.  *						  and returns the retail price
  16.  * 
  17.  * Computation is based on the formula;
  18.  * Retail Price = Wholesale Cost + (Wholesale Cost x Markup / 100)
  19.  * _____________________________________________________________________________
  20.  * INPUT
  21.  * wholesale : Item's wholesale cost
  22.  * markup    : Markup percentage (100 means 100%)
  23.  * 
  24.  * OUTPUT  
  25.  * retail    : Item's retail price
  26.  *
  27.  ******************************************************************************/
  28. #include <iostream>
  29. #include <iomanip>
  30. using namespace std;
  31. //
  32. // Function Prototypes
  33. double getWholesale();
  34. double getMarkup ();
  35. double calculateRetail(double, double);
  36. //
  37. int main ()
  38. {
  39. 	double wholesale; //INPUT  - Item's wholesale cost
  40. 	double markup;    //INPUT  - Markup percentage
  41. 	double retail;	  //OUTPUT - Item's retail price
  42.    //
  43.    // Set the numeric output formatting
  44.     cout << fixed << showpoint << setprecision(2);
  45.    //
  46.    // Get Wholesale Cost and Markup Percentage
  47.     wholesale = getWholesale();
  48.     markup    = getMarkup();
  49.    //
  50.    // Compute Retail Price
  51.     retail = calculateRetail(wholesale, markup);
  52.    //
  53.    // Output Result
  54.     cout << "The item's retail price is $" << retail << endl;
  55.     return 0;
  56. }
  57. // 
  58. //******************************************************************************
  59. // Definition of function getWholesale.										   *
  60. // This function asks the user to enter the item's wholesale cost. Negative    *
  61. // values are not accepted.													   *
  62. // It returns the wholesale cost as a double.								   *
  63. //******************************************************************************
  64. double getWholesale()
  65. {
  66. 	double cost;
  67.    //
  68.     cout << "Enter the item's wholesale cost: $";
  69.     cin >> cost;
  70.     while (cost < 0)
  71.     {
  72.     	cout << "Wholesale cost cannot be negative. Please re-enter: $";
  73.     	cin >> cost;
  74.     }
  75.     return cost;
  76. }
  77. //******************************************************************************
  78. // Definition of a function getMarkup.										   *
  79. // This function asks the user to enter the markup percentage.				   *
  80. // Negative values are not accepted.										   *
  81. // It returns the markup percentage as a double.
  82. //******************************************************************************
  83. double getMarkup()
  84. {
  85. 	double percent;
  86.    //
  87.     cout << "Enter the markup percentage (example: 100 for 100%): ";
  88.     cin >> percent;
  89.     while (percent < 0)
  90.     {
  91.     	cout << "Markup percentage cannot be negative. Please re-enter: ";
  92.     	cin >> percent;
  93.     }
  94.     return percent;
  95. }
  96. //
  97. //******************************************************************************
  98. // Definition of a function calculateRetail.								   *
  99. // This function receives an item's wholesale cost and markup percentage and   *
  100. // returns the retail price.												   *
  101. //******************************************************************************
  102. double calculateRetail(double cost, double markupPercent)
  103. {
  104. 	return cost + (cost * markupPercent / 100);
  105. }
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Enter the item's wholesale cost: $Enter the markup percentage (example: 100 for 100%): The item's retail price is $10.00
https://ideone.com/jlpA5I
language:
C++ (gcc 8.3)
created:
47 minutes ago
visibility:
public

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