My homework is to simulate a coin toss. Using the function flip to return the heads and tails count. tails = 0 heads = 1. Anyways I cant figure out why the program is returning this wierd outcome. Heres the codes. Everything is good up to the flip() function but once it return back to main the numbers get all messed up. Anybody know why it is doing that?

#include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;

// Function prototype

unsigned getFlip();

int main()
{
unsigned heads;
unsigned tails;


cout<< "Please enter how many times you'd like to flip the coin"<<endl;

getFlip();


// How many times the coin hit heads and tails
cout<<"You have flipped tails "<<tails<<" times"<<endl;
cout<<"You have flipped heads "<<heads<<" times"<<endl;

//Initializing the time, and the total number of flips.

unsigned total = 0;
total = heads + tails;

time_t rawtime;
time ( &rawtime );
cout<<"The day of "<<ctime (&rawtime)<<"You flipped the coin "<<total;
cout<<" number of times"<<endl;

system("pause");
return 0;

}

unsigned getFlip()
{
unsigned toss;
unsigned tails = 0;
unsigned heads = 0;
srand(time(0));
cin>>toss;
for (unsigned i = 0; i < toss; i ++)
{
if (rand() % 2)
tails ++;
else
heads ++;
}
return heads,tails;
}