Passing value between functions in C++ - c++

Question

I'm making a program for car company which has only 6 Salesman. The program will ask the user to input the name of each salesmen and his monthly salary, input the number of cars he sold in a month, as well as the brand and price of each car. The program will display the monthly income of each salesman (salary + commission), the average monthly income of the salesmen, the name(and income) of the salesman who has the highest income, the name (and income)of the salesman with the lowest income, the number of cars sold for each brand and the most popular
brand.
I'm stuck at passing the value of totalCommission from Salesman1() and Salesman2(). Another problem is, i don't know if i can CIN a string into an array named SalesmanName. Here is what i have done so far.
int main()
{
int cycle=1;
int SalesMan1(),SalesMan2();
do
{
switch(cycle)
{
case 1: SalesMan1(); cycle++; break;
case 2: SalesMan2(); cycle++; break;
/*case 3: SalesMan3(); cycle++; break;
case 4: SalesMan4(); cycle++; break;
case 5: SalesMan5(); cycle++; break;
case 6: SalesMan6(); cycle++; break;*/
default: cout<<"Printing out reports"<<endl;
system("\npause");
}
}while(cycle<=6);
return 0;
}
int SalesMan1()
{
char NameOne[40];
int numCar=1,carSold,carType,audiSold=0,bmwSold=0,mbenzSold=0;
double salary,carPrize,commission,totalCommission,allMonthlyIncome;
cout<<"Name of 1st Salesman:"<<endl;
cin.getline(NameOne,39);
cout<<"\nMonthly Salary: RM";
cin>>salary;
cout<<"\nNumber of car sold in a month: ";
cin>>carSold;
system("CLS");
do{
cout<<"\nEnter type of car sold as below: "<<endl;
cout<<"\n1-Audi"<<endl;
cout<<"2-BMW"<<endl;
cout<<"3-Mercedes Benz"<<endl;
cout<<"\nCar Type:";
cin>>carType;
switch(carType)
{
case 1:
cout<<"\nEnter the price sold: RM";
cin>>carPrize;
commission=0.02*carPrize;
totalCommission+=commission;
audiSold++;
system("CLS");
break;
case 2:
cout<<"\nEnter the price sold: RM";
cin>>carPrize;
commission=0.02*carPrize;
totalCommission+=commission;
bmwSold++;
system("CLS");
break;
case 3:
cout<<"\nEnter the price sold: RM";
cin>>carPrize;
commission=0.035*carPrize;
totalCommission+=commission;
mbenzSold++;
system("CLS");
break;
default :
cout<<"\nNot available!"<<endl;
system("pause");
return 1;
}
numCar++;
}while(numCar<=carSold);
allMonthlyIncome=allMonthlyIncome+totalCommission+salary;
}
int SalesMan2()
{
char NameTwo[40];
int numCar=1,carSold,carType,audiSold=0,bmwSold=0,mbenzSold=0;
double salary,carPrize,commission,totalCommission,allMonthlyIncome;
cout<<"Name of 2nd Salesman"<<endl;
cin.getline(NameTwo,39);
cout<<"\nMonthly salary: RM";
cin>>salary;
cout<<"\nNumber of car sold in a month: ";
cin>>carSold;
system("CLS");
do{
cout<<"\nEnter type of car sold as below: "<<endl;
cout<<"\n1-Audi"<<endl;
cout<<"2-BMW"<<endl;
cout<<"3-Mercedes Benz"<<endl;
cout<<"\nCar Type:";
cin>>carType;
switch(carType)
{
case 1:
cout<<"\nEnter the price sold: RM";
cin>>carPrize;
commission=0.02*carPrize;
totalCommission+=commission;
audiSold++;
system("CLS");
break;
case 2:
cout<<"\nEnter the price sold: RM";
cin>>carPrize;
commission=0.02*carPrize;
totalCommission+=commission;
bmwSold++;
system("CLS");
break;
case 3:
cout<<"\nEnter the price sold: RM";
cin>>carPrize;
commission=0.035*carPrize;
totalCommission+=commission;
mbenzSold++;
system("CLS");
break;
default :
cout<<"\nNot available!"<<endl;
system("pause");
return 1;
}
numCar++;
}while(numCar<=carSold);
allMonthlyIncome=allMonthlyIncome+totalCommission+salary;
}

Answer 1

In the SalesmanN() functions, end it with:
return totalCommission;
In main(), do:
int allCommissions = 0;
and then in your loop you do:
case 1: allCommissions += SalesMan1(); cycle++; break;

Answer 2

You can CIN into any character array but it is not preferred for names as CIN limits its input on spaces. The SalesmanName will not have any spaces.
char arr[1000];
cin`>>arr;
If you enter "XYZ ABC" as name, then arr[] will store only "XYZ" while "ABC" will remain in the input stream.
For this question you can create a Salesman Class which will encapsulate all the functions nd data required for each Salesman . As the company has only 6 workers you can make a array of 6 object of Salesman Class. So that you can refer to particular salesman's commission as SalesMan[i].getCommission(). Moreover class will help to expand to more number of workers later.