Parsing 2 Arrays to friend function - c++

Question

I am having troubles by accessing 2 of my arrays at the same time with my friend function.
Here is my code (the important part):
int main(){
// Array with fracture, example 3/4
cFracture cFArr[8] = {cFracture(3,4), cFracture(24,6)};
// One fracture have to be added to other
// I am missing something here ->
add(cFArr[0]);
return 0;
}
I need to understand, how to parse 2 Arrays at the same time.
Here is my add function, here is nothing in, i need to understand how to get 2 arrays at the same time...
int add(cFracture add_f){
cout << "Result after adding fracture 1 to fracture 2: " << add_f.a << "/" << add_f.b << endl;
return 0;
}
And here is my class:
cFracture{
int a;
int b;
public:
cFracture(int a_in = 0, int b_in = 0){
a = a_in;
b = b_in;
}
friend int add(cFracture add_f);
};
How should I go on? How to get 2 arrays at the same time, so i can add one to the other? It have to be done with friend function.

Answer 1

Just add another argument to the function.
int add(cFracture add_f1, cFracture add_f2){
cout << "Result after adding fracture 1 to fracture 2: " << add_f1.a + add_f2.a << "/" << add_f1.b + add_f2.b << endl;
return 0;
}
and change the friend declaration to match the new function.
cFracture{
int a;
int b;
public:
cFracture(int a_in = 0, int b_in = 0){
a = a_in;
b = b_in;
}
friend int add(cFracture, cFracture);
};
Then you can do:
add(cFarr[0], cfArr[1]);
in the main() function.