#include <iostream>
using namespace std;
 
int main(void)
 
{
	int pnum;
 
	cout << "Please press the number of the calculator you would like to use." << endl << endl;
	cout << "\n1. BMI Calculator";
	cout << "\n2. Body Fat Percentage Calculator\n" << endl;
	cin >> pnum;
 
 
 
}

#include <iostream>
using namespace std;
 
int BFP(void)
{
 
	double tweight;
	double waist;
	double bodyfp;
	cout << "Please enter your weight." << endl << endl;
	cin >> tweight;
 
	cout << "\nPlease enter your waist size in inches." << endl << endl;
	cin >> waist;	
 
	double leanbmw;
	leanbmw =((tweight * 1.082) + (94.42));
	double leanbmwa;
	leanbmwa = waist * 4.15;
	double leanbm;
	leanbm = leanbmw - leanbmwa;
	double bfweight;
	bfweight = (tweight - leanbm);
 
 
	bodyfp = ((bfweight *100) / tweight);
 
 
 
	if (bodyfp >= 2 && bodyfp <= 4) {
		cout << "\nYour Body Fat percentage is: " << bodyfp;
		cout << "\nYour Body Fat percentage classification is Essenntial Fat." << endl;
	}
	else if (bodyfp >= 5 && bodyfp <= 13) {
		cout << "\nYour Body Fat percentage is: " << bodyfp;
		cout << "\nYour Body Fat percentage classification is Athletes." << endl;
	}
	else if (bodyfp >= 14 && bodyfp <= 17){ 
		cout << "\nYour Body Fat percentage is: " << bodyfp;
		cout << "\nYour Body Fat percentage classification is Fitness." << endl;
	}
	else if (bodyfp >= 18 && bodyfp <= 25){ 
		cout << "\nYour Body Fat percentage is: " << bodyfp;
		cout << "\nYour Body Fat percentage classification is Acceptable." << endl;
	}
	else if (bodyfp >= 26){ 
		cout << "\nYour Body Fat percentage is: " << bodyfp;
		cout << "\tYour Body Fat percentage classification is Obese." << endl << endl;
	}
 
 
 
	system("pause");
 
	return 0;
 
}

#include <iostream>
using namespace std;
 
int BMI()
 
{
	system("TITLE BMI Calculator");
	system("COLOR 1f");
 
	int myweight;
	int myheight;
	int mynum;
	mynum = 703;
	int mybmi;
	int squared;
 
 
	cout << "Please enter your weight in pounds." << endl << endl;
	cin >> myweight;
 
	cout << "\nPlease enter your height in inches." <<endl << endl;
	cin >> myheight;
cin.ignore();
 
	squared = (myheight * myheight);
	mybmi = ((myweight * 703)/squared);
 
 
	if (mybmi < 18.5) {
		cout << "\nYour BMI is: " << mybmi;
		cout << "\tYour BMI says you are Underwight." << endl;
	}
	else if (mybmi >= 18.5 && mybmi < 24.5) {
		cout << "\nYour BMI is: " << mybmi;
		cout << "\tYour BMI says you are Normal." << endl;
	}
	else if (mybmi >= 24.5 && mybmi <29.9){ 
		cout << "\nYour BMI is: " << mybmi;
		cout << "\tYour BMI says you are Overwight." << endl;
	}
	else if (mybmi >= 30){ 
		cout << "\nYour BMI is: " << mybmi;
		cout << "\tYour BMI says you are Obese." << endl;
	}
 
 
	cin.get();
 
 
	system("pause");
 
	return 0;
 
}

switch( pnum )
{
    case 1:
          BFP();
          break;
    case 2:
          BMI();
          break;
    default:
         cout << "Huh??\n";
         break;
}

#include <iostream>
#include "BMI.cpp"
#include "BFP.cpp"
using namespace std;
 
int main(void)
 
{
	int pnum;
 
	cout << "Please press the number of the calculator you would like to use." << endl << endl;
	cout << "\n1. BMI Calculator";
	cout << "\n2. Body Fat Percentage Calculator\n" << endl;
	cin >> pnum;
 
if(pnum<1||pnum>2){
cout<<"Invalid choice."<<endl;
return 1;
}
 
 
	switch( pnum )
{
    case 1:
          BFP();
          break;
    case 2:
          BMI();
          break;
 
}
 
 
	return 0;
}

int main()
{
    while( true )
    {
          // blabla
    }
}