Write a program that calculates the average number of days a company\'s employee

Question

Write a program that calculates the average number of days a company's employees are absent. The program should have the following functions:
-A function called by main that asks the user for the number of employees in the company. This value should be returned as a int. (The function accepts no arguments.
-A function called by main that accepts one argument: the number of employees in the the company. The function should ask the user to enter the number of days each employee missed during the past year. The total of these days should be returned as an int.
-A function called by main that takes two arguments: the number of employees in the company and the total number of days absent for all employees during the year. The function should return, as a double, the average number of days absent. (this function does not perform screen output and does not ask the user for input.)

Explanation / Answer

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#include <iostream>
using namespace std;
int employees();
int days(int);
double average(int,int);
int main()
{int emp,tot;
double avg;
emp=employees();
tot=days(emp);
avg=average(emp,tot);
cout<<"Average days out: "<<avg<<endl;
system("pause");
return 0;
}
int employees()
{int n;
cout<<"Enter number of employees: ";
cin>>n;
while(n<1)
   {cout<<"must be>=1 ";
    cout<<"Enter number of employees: ";
    cin>>n;
   }
return n;
}
int days(int n)
{int i,tot=0,d;
for(i=1;i<=n;i++)
{cout<<"enter number of days employee "<<i<<" was out: ";
cin>>d;
while(d<0)
   {cout<<"must be >=0 ";
    cout<<"enter number of days employee "<<i<<" was out: ";
    cin>>d;
    }
tot+=d;
}
return tot;
}
double average(int n,int d)
{return (double)d/n;
}

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