//Lab 12 Question 2
#include <iostream>
#include <cstdlib>

using namespace std;

int convertFeetToInches (int feet)
{
    const int INCHES_PER_FOOT = 12;
    return (feet * INCHES_PER_FOOT);
}
double convertInchesToMeters (int inches)
{
    const double METERS_PER_INCHES = 0.0254;
    return (inches * METERS_PER_INCHES);
}
double convertPoundsToKilos (int pounds)
{
       const double KILOS_PER_POUND = 0.453592;
       return (pounds * KILOS_PER_POUND);
}
double calculateBMI(double weight, double height){
    return weight/(height*height);
}

//Declaration of the main function

int main () {
    int feet, inches, inches_2, inches_3, pounds;
    double height, metres, weight, KG;
    double BMI;
    int mode = 0;
    int mode_2 = 0;

    cout<<"*** Body Mass Index Program ***"<<endl;
    cout<<endl<<endl;
    cout<<"Height: (1) Feet and inches or (2) Metres: ";
    cin>>mode;
    cout<<endl<<endl;

    if (mode == 1){
    cout<<"          ";
       cout<<"Enter feet: ";
       cin>>feet;
       inches_2 = convertFeetToInches (feet);
       cout<<endl;
       cout<<"          ";
       cout<<"Enter inches: ";
       cin>>inches_3;
       inches = inches_2+inches_3;
       cout<<endl;
       metres = convertInchesToMeters (inches);
       cout<<endl;
}
    else {
         cout<<"          ";
         cout<<"Enter Metres: ";
         cin>>metres;
         cout<<endl<<endl;
         }

    height = metres;

    cout<<"Weight: (1) Pounds or (2) Kilograms: ";
    cin>>mode_2;
    cout<<endl<<endl;

    if (mode_2 == 1){
             cout<<"          ";
             cout<<"Enter pounds: ";
             cin>>pounds;
             KG = convertPoundsToKilos (pounds);
             cout<<endl;
             }
    else {
         cout<<"          ";
         cout<<"Enter Kilograms: ";
         cin>>KG;
         cout<<endl;
         }
    weight = KG;
    cout<<endl<<endl;

    cout<<"The BMI is "<<calculateBMI(weight,height)<<"."<<endl;


    cout<<endl<<endl;

    system ("PAUSE");
    return 0;
}