Question

C++

Background information:

A company has four salespeople who sell five different products. Once a day, each salesperson passes in a slip for each different type of product sold. First on the line is the salesperson name, second is the product number, and third is the sales volume for this product by this salesperson in dollars. For example, the line Tara 2 200.00 means that salesperson Tara reported sales of volume $200.00 for product number 2.

Data:

Eric 1 200000.00
Sookie 2 200.00
Sookie 4 200.50
Bill 3 5000.00
Bill 5 7500.00
Tara 4 350.50
Eric 2 200.00
Tara 2 200.00
Tara 4 350.50
Bill 5 2500.00
Sookie 1 50000.00
Sookie 2 200.00
Eric 5 10000.00
Tara 2 200.00
Tara 4 150.50
Bill 5 1000.00
Sookie 4 400.50

B1. Make a class SalesSlip to represent the structure of a sales slip. Among the other methods that you need, include a method to read a sales slip from the next line of a text file. Your method should have an argument of type ifstream& representing the text file from which the method reads. Make a main function in the program to test your class.

B2. Write another program to calculate and print the total sales of each product by each salesperson. Read the sales slips from the data (or for partial points, in case your first program does not work correctly, from an array with the same data, initialized in your main program) and calculate the total sales of each product by each salesperson. Accumulate the total sales of each product by each salesperson in a two-dimensional array with a row for each salesperson and a column for each product. You may use the salesperson’s ID number from the following table as a row number for the corresponding salesperson. Your program should print the 2-dimensional array in a well-formatted table, showing the salesperson’s name in front of each row and the product number above each column.

Answer 1

Hello dear...

Here is the perfectly working C++ program for both the tasks. I have also written comments for better understanding. Also attaches images output and code for comfort of reading. Hope you will like it.

SalesSlip.cpp

#include <iostream>
#include <string>
#include <fstream>
#include <vector>
using namespace std;
//class definition
class SalesSlip{
        //private data members
        int product;
        string name;
        double volume;
        //public methods
        public:
                //default construtor
                SalesSlip(){
                        name = "";
                        product = 0;
                        volume = 0;
                }
                //function to read data from ifstream
                void read(ifstream& in){
                        in >> name >> product >> volume ;
                }
                //getter methods to access private data values
                string getName(){
                        return name;
                }
                int getProductNumber(){
                        return product;
                }
                double getVolume(){
                        return volume;
                }
                //function to print data
                void print(){
                        cout << name << " " << product << " " << volume << endl;
                }
}; //end of class definition

//main methods
int main(){
        //declare required variaebles
        int i,j;
        //open file into ifstream object
        ifstream in ("sales data.txt");
        //print error message and exit if unable to open the input file
        if (!in.is_open()){
                cout << "Unable to open input file";
                return 0;
        }
        //create a vector(dynamic array) to store array of SalesSlip objects
        vector<SalesSlip> data;
        //run the loop until end of file reaches
    while (!in.eof()){ 
        //create a SalesSlip object and read the input data from ifstream
        SalesSlip slip;
        slip.read(in);
        //add object to vector
        data.push_back(slip); 
    }
        //resizing vector to remove last unneccessary elements
        data.resize(data.size()-1);
        //print data of objects in vector
        for(i = 0; i < data.size(); i++){
                data[i].print();
        }
        
        //storing the salespersons names in an array
        string names[] = {"Eric", "Sookie", "Bill", "Tara"};
        //create table to store total sales of each product by each salesperson
        int table[4][5] = {0};
        
        //calculate total sales  of each product by each salesperson
    for (i = 0; i < data.size(); i++) {
    
        if(data[i].getName() == names[0])
                table[0][data[i].getProductNumber()-1] ++;
        else if(data[i].getName() == names[1])
                table[1][data[i].getProductNumber()-1] ++;
                else if(data[i].getName() == names[2])
                table[2][data[i].getProductNumber()-1] ++;
        else if(data[i].getName() == names[3])
                table[3][data[i].getProductNumber()-1] ++;
    }
    //print table
    cout << "\nTotal sales  of each product by each salesperson" << endl;
        cout << "\t " << 1 << "\t" << 2 << "\t" << 3 << "\t" << 4 << "\t" << 5 ;
        for(i=0; i<4; i++){
                 cout << "\n" << names[i] << "\t|";
                for(j=0; j<5; j++){
                        cout << table[i][j] << "\t";
                }
        }
        
        return 0; //end
}

sales data.txt

Eric 1 200000.00
Sookie 2 200.00
Sookie 4 200.50
Bill 3 5000.00
Bill 5 7500.00
Tara 4 350.50
Eric 2 200.00
Tara 2 200.00
Tara 4 350.50
Bill 5 2500.00
Sookie 1 50000.00
Sookie 2 200.00
Eric 5 10000.00
Tara 2 200.00
Tara 4 150.50
Bill 5 1000.00
Sookie 4 400.50

Output:

Eric 1 200000 Sookie 2 200 Sookie 4 200.5 Bill 3 5000 Bill 5 7500 Tara 4 350.5 Eric 2 200 Tara 2 200 Tara 4 350.5 Bill 5 2500 Sookie 1 50000 Sookie 2 200 Eric 5 10000 Tara 2 200 Tara 4 150.5 Bill 5 1000 Sookie 4 400.5 Total sales of each product by each salesperson 1 2 3 4 5 Eric 11 1 0 1 Sookie 1 2 2 Bill 10 1 3 Tara 10 2 3 0 Process exited after 0.05759 seconds with return value o Press any key to continue .

Images of code:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 #include <iostream> #include <string> #include <fstream> #include <vector> using namespace std; //class definition class SalesSlip{ //private data members int product; string name; double volume; //public methods public: 1/default construtor Salesslip(){ name = ""; product = 0; volume = } ī/function to read data from ifstream void read(ifstream& in){ in >> name >> product >> volume ; 1/getter methods to access private data values string getName() { return name; int getProduct Number() { return product; } } ہا double getVolume(){ return volume; 1/function to print data void print(){ cout << name << " " << product << } << volume << endl; } }; //end of class definition 43 44 45 //main methods int main() { //declare required variaebles int i,j; //open file into ifstream object ifstream in ("sales data.txt"); //print error message and exit if unable to open the input file if (!in.is_open()) { cout << "Unable to open input file"; return ; } 46 47 48 49 50

51 52 53 54 55 56 57 58 //create a vector(dynamic array) to store array of SalesSlip objects vector<SalesSlip> data; //run the loop until end of file reaches while (!in.eof()){ //create a SalesSlip object and read the input data from ifstream Salesslip slip; slip.read(in); I/add object to vector data.push_back(slip); } //resizing vector to remove last unneccessary elements data.resize(data.size()-1); //print data of objects in vector for(i = 0; i < data.size(); i++){ data[i].print(); } 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 == 79 //storing the salespersons names in an array string names[] = {"Eric", "Sookie", "Bill", "Tara"}; //create table to store total sales of each product by each salesperson int table[4][5] = {@}; //calculate total sales of each product by each salesperson for (i = 0; i < data.size(); i++) { if(data[i].getName() names[@]) table[@][data[i].getProductNumber()-1] ++; else if(data[i].getName() == names[1]) table[1][data[i].getProductNumber()-1] ++; else if(data[i].getName() == names[2]) table[2][data[i].getProductNumber()-1] ++; else if(data[i].getName() names[3]) table[3][data[i].getProductNumber()-1] ++; } //print table cout << "\nTotal sales of each product by each salesperson" << endl; cout << "\t " << 1 << "\t" << 2 << "\t" << 3 << "\t" << 4 << "\t" «< 5; for(i=0; i<4; i++){ cout << "\n" << names[i] << "\t\"; for(j=0; j<5; j++){ cout << table[i][j] << "\t"; 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 ہا return ®; //end ہا

Hope you like it.

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