#include <iostream>
#include <iomanip>
using namespace std;
void ShapeSelect();
int state = 1;
int main()
{
	while (state > 0)
		{
			switch (state)
			{
				case 1:
					ShapeSelect();
					break;
			}
		}
	return 0;
}
void ShapeSelect()
{
	int input;
	cout<<"Select a shape.\n";
	cout<<"1) Triangle\n";
	cout<<"2) Rectangle\n";
	cout<<"3) Circle\n";
	cout<<"4) Exit\n";
	cin>>input;
	switch (input)
	{
		case 1:
			TriangleData();
			break;
		case 2:
			RectangleData();
			break;
		case 3:
			CircleData();
			break;
		case 4:
			state = 0;
	}
}