Room Volume

#include <iostream>
#include <stdio.h>

using namespace std;

typedef struct Distance
{
    int feet;
    int inches;
}Distance;

struct volume
{
    Distance length;
    Distance width;
    Distance heigth;
};

void main()
{
    volume room;
    cout << "Insert the length: " << endl;
    cout << "Feet: ";
    cin >> room.length.feet;
    cout << "Inches: ";
    cin >> room.length.inches;
    cout << endl << "Insert the width: " << endl;
    cout << "Feet: ";
    cin >> room.width.feet;
    cout << "Inches: ";
    cin >> room.width.inches;
    cout << endl << "Insert the heigth: " << endl;
    cout << "Feet: ";
    cin >> room.heigth.feet;
    cout << "Inches: ";
    cin >> room.heigth.inches;

    float l,w,h,v;
    l = room.length.feet + (float)room.length.inches/12;
    w = room.width.feet + (float)room.width.inches/12;
    h = room.heigth.feet + (float)room.heigth.inches/12;
    v = l*w*h;
    cout << endl << endl << "Volume of the room: " << v << " feet." << endl;
}