C++ program to calculate the area of a room

#include<iostream>
#include<conio.h>

struct distance
{
    int feet;
    float inches;
};

struct room
{
    distance wid;
    distance len;
};

int main()
{
    system("cls");

    float l,w,area;
    room din;

    din.wid.feet = 10;
    din.wid.inches = 5.5;
    din.len.feet = 12;
    din.len.inches = 6.5;

    l = din.wid.feet + din.wid.inches/12;
    w = din.len.feet + din.len.inches/12;

    area = l*w;

    std::cout<<"The area of dining hall is = "<<area;

    getch();
    return 0;
}

The area of dining hall is = 131.1164932