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#include <iostream>
#include <string>
using namespace std;
enum PeriodName
{
PRECAMBRIAN, CAMBRIAN, ORDOVICIAN, SILURIAN, DEVONIAN, CARBONIFEROUS,
PERMIAN, TRIASSIC, JURASSIC, CRETACEOUS, PALEOGENE, NEOGENE
//Enum type that holds the period names
};
class Period
{
public :
Period()
{
curPeriod = PRECAMBRIAN;
};//Period set to precambrian
Period(PeriodName name)
{
curPeriod = name;
};//period set to periodName
string toString(PeriodName name)
{
string periodName;
switch(name)
{
case PRECAMBRIAN:
periodName = "Precambrian";
break;
case CAMBRIAN:
periodName = "Cambrian";
break;
case ORDOVICIAN:
periodName = "Ordovician";
break;
case SILURIAN:
periodName = "Silurian";
break;
case DEVONIAN:
periodName = "Devonian";
break;
case CARBONIFEROUS:
periodName = "Carboniferous";
break;
case PERMIAN:
periodName = "Permian";
break;
case TRIASSIC:
periodName = "Triassic";
break;
case JURASSIC:
periodName = "Jurassic";
break;
case CRETACEOUS:
periodName = "Cretaceous";
break;
case PALEOGENE:
periodName = "Paleogene";
break;
case NEOGENE:
periodName = "Neogene";
break;
}
return periodName;
};//Returns date as string
int toInt(PeriodName name)
{
int startingYear;
switch(name)
{
case PRECAMBRIAN:
startingYear = 4500;
break;
case CAMBRIAN:
startingYear = 570;
break;
case ORDOVICIAN:
startingYear = 500;
break;
case SILURIAN:
startingYear = 435;
break;
case DEVONIAN:
startingYear = 395;
break;
case CARBONIFEROUS:
startingYear = 345;
break;
case PERMIAN:
startingYear = 280;
break;
case TRIASSIC:
startingYear = 225;
break;
case JURASSIC:
startingYear = 192;
break;
case CRETACEOUS:
startingYear = 136;
break;
case PALEOGENE:
startingYear = 65;
break;
case NEOGENE:
startingYear = 23;
break;
}
return startingYear;
};//Returns date as integer
void increment(PeriodName);//Does nothing if period is already Neogene
private:
PeriodName curPeriod;
};
int main()
{
Period period;
Period per(CAMBRIAN);
PeriodName name;
char ch = 'y';
int range1, range2;
while (ch=='y' || ch=='Y')
{
cout << "Enter the range of the prehistoric dates" << endl
<< "(in million years, seperated by a space): ";
cin >> range1 >> range2;
cout << endl << "Period Name\t Starting Date" << endl;
cout << "-----------\t -------------" << endl;
for (name = PRECAMBRIAN; name <= NEOGENE; name = PeriodName(name+1))
{
if(period.toInt(name) <= range1 && period.toInt(name)>=range2)
cout << period.toString(name) << "\t\t"
<< period.toInt(name) << endl;
}
cout << endl;
cout << "Do you want to continue?" << " (Press 'n' to exit): ";
cin >> ch;
cout << endl;
}
return 0;
}
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