C++ : comparing two distances using operator overloading

#include<iostream>
using namespace std;

class dist
{
private:
    int feet;
    float inches;
public:
    dist():feet(0),inches(0){}
    dist(int f, float in): feet(f),inches(in){}
    void getdist()
    {
        cout<<"feet=";cin>>feet;
        cout<<"inches=";cin>>inches;
    }
    friend bool operator <(dist d1, dist d2);
};

bool operator <(dist d1,dist d2)
{

    float dd1=d1.feet+d1.inches/12;
    float dd2=d2.feet+d2.inches/12;
    return dd1<dd2?true:false;
}

int main()
{

    dist d1(7,6.25);
    dist d2;
    d2.getdist();
    if(d1<d2)
        cout<<"d1 is smaller than d2"<<endl;
    else
        cout<<"d2 is smaller than d1"<<endl;
    return 0;
}