I need help to get this done: Write a specification file for the Period class th

Question

I need help to get this done:

Write a specification file for the Period class that has a private field that is an enumeration type, representing the name of the periods. It should have functions that:
• Return the period as a string,
• Increment the period to the next most recent period (if the period is already QUATERNARY, the increment operation should do nothing);
It should have a default constructor that sets the period to PRECAMRIAN, and a constructor with parameter of the enumeration type to allow the user to create a Period object containing any period.

The table of the entire periods is listed below:
Period time                          Starting date(millions of years)
Quaternary                           2.5
Tertiary                                65
Cretaceous                           136
Jurassic                               192
Triassic                                225
Permian                               280
Carboniferous                      345
Devonian                             395
Silurian                                435
Ordovician                           500
Cambrian                             570
Precambrian                         4500 or earlier



Write the complete implementation file of Period class

Explanation / Answer

please rate - thanks

I don't understant the need for the starting date.

Hope this is better

#include <iostream>
using namespace std;
enum periodName
{PRECAMBRIAN,CAMBRIAN,ORDOVICIAN,SILURIAN,DEVONIAN,CARBONIFEROUS,PERMIAN,
TRIASSIC,JURASSIC,CRETACEOUS,TERTIARY,QUATERNARY};
class Period
{
periodName name;
public:
Period()
{name = PRECAMBRIAN;
}
Period(periodName n)
{name = n;
}
string getName()
{string period[]={"Precambrian","Cambrian","Ordovician","Silurian","Devonian",
                    "Carboniferous","Permian","Triassic","Jurassic",
                    "Cretaceous","Tertiary","Quaternary"};
return period[name];
}


void increment()
{
if(name!=QUATERNARY)
name=(periodName)(name + 1);
}
};

int main()
{
Period p1;
Period p2(QUATERNARY);
Period p3(JURASSIC);
cout<<"Period 1 before increment: "<<p1.getName()<<endl;
p1.increment();
cout<<"Period 1 after increment: "<<p1.getName()<<endl;
cout<<"Period 2 before increment: "<<p2.getName()<<endl;
p2.increment();
cout<<"Period 2 after increment: "<<p2.getName()<<endl;
cout<<"Period 3 before increment: "<<p3.getName()<<endl;
p3.increment();
cout<<"Period 3 after increment: "<<p3.getName()<<endl;

system("pause");
return 0;
}

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