Samples of the last homework assignment

//////////////////////////////////////////////////////////////////////
// Function: calculateCosts
//           Calculates customer's costs based on the data input
//           by the user
//
//   Inputs: a float representing square yards purchased (value)
//           a float representing cost per square yard   (value)
//           a float representing labor per square yard  (value)
//           a float representing floor preparation cost (value)
//           a float representing discount rate          (value)
//
//  Outputs: a float representing carpet cost            (reference)
//           a float representing labor cost             (reference)
//           a float representing total discount         (reference)
//           a float representing total tax              (reference)
//           a float representing total customer charge  (reference)
void calculateCosts(int   sqr_yrds,
                    float cost_per_sqr_yrd,
                    float lbr_per_sqr_yrd,
                    float prep_cost,
                    float discount_rate,
                    float &carpet_cost,
                    float &labor_cost,
                    float &discount,
                    float &total_tax,
                    float &customer_charge);


//   Function Name: calculateCosts
//       Objective: Calculates costs associated with purchase 
//                  of carpeting
//
//          Inputs: an integer representing cost per square yard,
//                  a float representing cost per square yard,
//                  a float representing labor per square yard,
//                  a float representing prep charge, and  
//                  a float representing discount percentage
//                  a constant float representing tax percentage 
//
//         Outputs: a float representing discount amount in dollars
//                  a float representing carpet charge
//                  a float representing tax amount in dollars
//                  a float representing labor charge
//                  a float representing total charge for the customer
void calculateCosts (int square_yards, float cost_per_sq_yd, 
                     float labor_per_sq_yd, float prep_cost, 
                     float discount, float &dscount, 
                     float &carpet_charge, float &tax, 
                     float &labor_charge, float &charge);