Question

Please answer the following in C++.

Add a function to both the Sale and Salesperson classes that returns the private salesperson ID number. Write a main()function that contains an array of five Salesperson objects and store appropriate data in it. Then, continue to prompt the user for Sale data until the user enters an appropriate sentinel value. For each Sale transaction entered, determine whether the salesperson's ID number is valid. Either display an error message, or use the friend display()function to display all the data.

Use the following for the ID and name:

103: Woods

104: Martin

105: Martin

106: Hansen

107: Davis

Add a function to both the Sale and Salesperson classes that returns the private salesperson ID number Write a main()function that contains an array of five Salesperson objects and store appropriate data in it. Then, continue to prompt the user for Sale data until the user enters an appropriate sentinel value. For each Sale transaction entered, determine whether the salesperson's ID number is valid. Either display an error message, or use the friend display()function to display all the data Use the following for the ID and name 103: Woods . 104: Martin . 105: Martin . 106: Hansen . 107: Davis Sample Run Enter salesperson ID or 0 to quit 103 Enter month of sale 2 Enter day 12 Enter year 2016 Enter amount of sale 1000 Sale #103 on 2/12/2016 for $1000 sold by #103 Woods Enter salesperson ID or 0 to quit 106 Enter month of sale 11 Enter day 25 Enter year 2016 Enter amount of sale 500 Sale #106 on 11/25/2016 for $500 sold by #106 Hansen Enter salesperson ID or 0 to quit 0

Answer 1

We first create the two classes, Salesperson and Sale. Salesperson has just two data members, id and name.

Sale has data members: id, which will be link the object to a Salesperson object with the same id. mm,dd,yyyy and amt save the month, day, year and amount of sale.

Data can be saved to objects of these classes either through their constructors or their respective setData() methods. Both classes have a method getID() which returns the id of the object of the respective classes.

The Sale class has a friend function, display() which is used to display private data of that class. It takes two arguments, an object of Sale class and an object of Salesperson class. It makes use of the Salesperson class' getID() and getName() methods to display data of that class.

The validateID() function takes two arguments, an int ID and an arrayP[] of Salesperson. It compares the id of each element of P[] with ID. If a match is found, then ID is valid and the function returns the index of P[] where the match was found. If match is not found, then ID is invalid and the function returns a -1.

In the main() function, we first create an array of five salespersons with the data given in the question.

Then we get a salesperson's ID from the user and validate it. The program goes into a loop to accept ID and dat until the user enters 0 for ID to stop.

Then we get the date, validating each part (day and month) as it is entered. Note that this code does not account for leap years. After this, we get the sale amount.

Once the data has been entered, a Sale object, t, is created with it. Since the question does not mention that the Sale data has to be stored anywhere, we simply overwrite t in each iteration of the outer while loop.

All this dat from the two objects is then displayed using the display() function.

Code:

#include <iostream> #includeくstring> using nanespace std; class salesperson int id string nare: 10 pubiic: Salesperson/default constructor 12 13 14 15 16 17 18 19 20 21 assign dumny values Salesperson (int ї, string n) //parare terized constructor id-i nane-n void setData (int 1,string n //set up the object 23 24 25 26 27 28 29 30 31 id-i nane-n int getIDO //return salesperson's II return id: string getitane //return salesperaon's name return nane 34 35 36 class Sale 38 39 10 int İd; //this is the same as salesperson id int皿: //nonth of sale int dd; //day of sale int yyyY year of sale double ant: /amount of sale 12 13 d4 public: Sale //default constructon C++source file length: 3,797 lines: 144 Ln: 144 Col:1 Sel:010 Windows (CRLF) UTF-8 INS

15 16 17 18 19 assign dumny id=-1 ; values dd-0: Sale (int L,int m, int d,int y,double a) //paraneterized constructor 54 id-i dd-d: ant-a 59 void setData (int 1,int m,int d,int y, double a get the object's data 61 id-i 63 64 dd-d: ant-a 67 68 69 70 71 72 73 74 75 76 int getIDO return salesperson id return id: friend vold display (Sale S,5alesperson P) void diplay (Sale S,Salesperson E) the friend function 78 79 B0 int validateID (int ID, Salesperson P) //check if ID is found in 1. return index if the array at which ID is found, 81 if not found tor (int į=0;ǐく5:1++) //go tse the array of aaleseaecaena 83 84 ir (1-2P [1].getID()) //if ID is found in the array, 1D is valid return i; return index at which match 18 found /fcontrol will cone here only i ID 1s invalid, d was not found in the array return-1 86 C++source file length: 3,797 lines: 144 Ln: 144 Col:1 Sel:010 Windows (CRLF) UTF-8 INS

casino pyesData.cpp int nain) //tirst create the array of 5 Salespersons Salesperson SPT5] SP [0].setData (i03, "Woods") SP [11.setData (i00, Martin) SP [21.setData (i05, "Martin) SP [31.setData (i06, "Hansen") SP[4].setData (i07, Davi9") int ID,i: /to input ID to searc, index of Se int n,d,y: /to input the date double a to input sales anount 103 104 /read ID cout<<"Enter salesperson ID or 0 to quit" cim>ID 1-validateD(ID, SP)/validate the ID while (ID!-0 && İ::-1) //keep looping till the user enters a valid id 106 109 cout<<"Ivalid Salesperson ID.<cendl; cout<<"Enter salesperson ID or 0 to quit" cim I 1-validateID(ID, SP) /validate the ID 113 114 115 116 /keep looping untii user enters while (ID!) for ID to quit 118 cout<<"Enter zonth of sale"i 119 while (IKI " 피>12) //keep looping till valid nonch nurber is entered 121 coutくく"Invalid month. "くくendl; cout<<"Enter month of sale "; 123 124 125 126 r end of inner while cout<<"Enter day of sale ”; ir (m=2) //if month is February (Note: tis code does not take into account leap years) 129 while (dkl |I d>2)keep looping ti11 valid day number is entered cout<<"Invalid date. "<<end1 C++source file length: 5,231 lines: 177 Ln: 88 Col:1 Sel: 010 Windows (CRLF) UTF-8

casino pyesData.cpp 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 cout<<Enter day of sale end of while(d.. else rir m!-2) ir (m=-11 m=3 11 m=5 11 m_-7 II m=e II m=10 11 m=12) //if the month can have 31 days while (dkl |I d>)keep l0oping ti11 valid day number is entered cout<<"Invalid date. "<<end1 cout<e Enter day of sale" end of while(d.. else if the onth can have only 30 days while (dkl |I d>0) keep l0oping ti11 valid day number is entered cout<<"Invalid date. "<<end1 cout<e Enter day of sale" end of while(d.. end of else m!-2) cout<<"Enter year of salei cout<<"Enter anmount of sale" Sale t(ID,m,d,y,a)//create a new Sale object display (t,sp[1]); //display data of the Sale object τ and the Salesperson object sp[1] /fread the neXt ID cout<<"Enter salesperson ID or 0 to quit" cim I 1-validateID(ID, SP) /validate the ID while (ID!-0 && İ::-1) //keep looping till the user enters a valid id or o cout<< Ivalid Salesperson ID.<cendl; cout<ぐEnter salesperson ID or 0 to quit ". 1-valldateID(ID, SP) /validate the ID end of while (ID 172 173 174 175 176 end of outer while return 0 C++source file length: 5,231 lines: 177 Ln: 88 Col:1 Sel: 010 Windows (CRLF) UTF-8 INS

#include <iostream>
#include <string>

using namespace std;

class Salesperson
{
int id;
string name;
public:
Salesperson() //default constructor
{ //assign dummy values
id=-1;
name="";
}
Salesperson(int i,string n) //parameterized constructor
{
id=i;
name=n;
}
void setData(int i,string n) //set up the object
{
id=i;
name=n;
}
int getID() //return salesperson's ID
{
return id;
}
string getName() //return salesperson's name
{
return name;
}
};

class Sale
{
int id; //this is the same as Salesperson id
int mm; //month of sale
int dd; //day of sale
int yyyy; //year of sale
double amt; //amount of sale
public:
Sale() //default constructor
{ //assign dummy values
id=-1;
mm=0;
dd=0;
yyyy=0;
amt=0;
}
Sale(int i,int m,int d,int y,double a) //parameterized constructor
{
id=i;
mm=m;
dd=d;
yyyy=y;
amt=a;
}
void setData(int i,int m,int d,int y,double a) //set the object's data
{
id=i;
mm=m;
dd=d;
yyyy=y;
amt=a;
}
int getID() //return salesperson id
{
return id;
}
friend void display(Sale S,Salesperson P);
};

void display(Sale S,Salesperson P) //the friend function
{
cout<<"Sale #"<<S.id<<" on "<<S.mm<<"/"<<S.dd<<"/"<<S.yyyy<<" for $"<<S.amt<<" by #"<<P.getID()<<" "<<P.getName()<<endl;
}

int validateID(int ID,Salesperson P[]) //check if ID is found in P[], return index if the array at which ID is found, -1 if not found
{
for(int i=0;i<5;i++) //go thru the array of salespaersons
if(ID==P[i].getID()) //if ID is found in the array, ie ID is valid
return i; //return index at which match is found
//control will come here only if ID is invalid, ie was not found in the array
return -1;
}

int main()
{
//first create the array of 5 Salespersons
Salesperson SP[5];
SP[0].setData(103,"Woods");
SP[1].setData(104,"Martin");
SP[2].setData(105,"Martin");
SP[3].setData(106,"Hansen");
SP[4].setData(107,"Davis");

int ID,i; //to input ID to search, index of SP[]
int m,d,y; //to input the date
double a; //to input sales amount

//read ID
cout<<"Enter salesperson ID or 0 to quit ";
cin>>ID;
i=validateID(ID,SP); //validate the ID
while(ID!=0 && i==-1) //keep looping till the user enters a valid id
{
cout<<"Invalid Salesperson ID."<<endl;
cout<<"Enter salesperson ID or 0 to quit ";
cin>>ID;
i=validateID(ID,SP); //validate the ID
}

//keep looping until user enters 0 for ID to quit
while(ID!=0)
{
cout<<"Enter month of sale ";
cin>>m;
while(m<1 || m>12) //keep looping till valid month number is entered
{
cout<<"Invalid month."<<endl;
cout<<"Enter month of sale ";
cin>>m;
} // end of inner while
cout<<"Enter day of sale ";
cin>>d;
if(m==2) //if month is February (Note: this code does not take into account leap years)
{
while(d<1 || d>28) //keep looping till valid day number is entered
{
cout<<"Invalid date."<<endl;
cout<<"Enter day of sale ";
cin>>d;
} //end of while(d...
}
else //(if m!=2)
{
if(m==1 || m==3 || m==5 || m==7 || m==8 || m==10 || m==12) //if the month can have 31 days
while(d<1 || d>31) //keep looping till valid day number is entered
{
cout<<"Invalid date."<<endl;
cout<<"Enter day of sale ";
cin>>d;
} //end of while(d...
else //if the month can have only 30 days
while(d<1 || d>30) //keep looping till valid day number is entered
{
cout<<"Invalid date."<<endl;
cout<<"Enter day of sale ";
cin>>d;
} //end of while(d...
} //end of else (m!=2)

cout<<"Enter year of sale ";
cin>>y;
cout<<"Enter amount of sale ";
cin>>a;
Sale t(ID,m,d,y,a); //create a new Sale object
display(t,SP[i]); //display data of the Sale object t and the Salesperson object SP[i]

//read the next ID
cout<<"Enter salesperson ID or 0 to quit ";
cin>>ID;
i=validateID(ID,SP); //validate the ID
while(ID!=0 && i==-1) //keep looping till the user enters a valid id or 0
{
cout<<"Invalid Salesperson ID."<<endl;
cout<<"Enter salesperson ID or 0 to quit ";
cin>>ID;
i=validateID(ID,SP); //validate the ID
} //end of while(ID...
} //end of outer while

return 0;
}

Output

Enter salesperson ID or to quit 6 Invalid Salesperson ID Enter salesperson ID or θ to quit 103 Enter month of sale 15 Invalid month Enter month of sale 2 Enter day of sale 30 Invalid date Enter day of sale 12 Enter year of sale 2816 nter amount of sale 1880 Sale #183 on 2/12/2016 for $1000 by #183 Woods Enter salesperson ID or to quit 106 Enter month of sale 11 Enter day of sale 25 Enter year of sale 2816 nter amount of sale 588 Sale #106 on 11/25/2016 for $500 by #106 Hansen Enter salesperson ID or to quit θ Process returned θ (0x8) execution time : 96.732 s Press any key to continue

Hope this helps!