return more than one value in c++

Question

I made a function in c++ that I named it apply_morph_find_target_func.
In this function I want to get two values and return one Mat and one dynamic array.
The name of the dynamic array is target_property.
The size of target_property would be n*6, where n is dynamic:
Here is what I have defined for my function :

Mat apply_morph_find_target_func(Mat result_first, Mat im) {
  ...
}

what should I do? regards

Use reference arguments to return additional values. – Barmar Jan 23 '17 at 07:07 — Barmar, Jan 23 '17 at 07:07
or return a struct/class that contains both values. – Barmar Jan 23 '17 at 07:07 — Barmar, Jan 23 '17 at 07:07
Or return a std::tuple – Erik Alapää Jan 23 '17 at 10:09 — Erik Alapää, Jan 23 '17 at 10:09

DavidWeiss2 · Answer 1 · 2017-01-25T12:41:14.670

1

You can return a structure with mat and a pointer to array within the structure. And in the main function to excess this values.

struct MyStruct{
    int **mat;
    int *arr;
};

MyStruct foo(){
    int n=1;
    MyStruct fooz;
    fooz.mat=new int*[n*6];
    fooz.arr=new int[6];
    return fooz;
}

edited Jan 25 '17 at 12:41

answered Jan 23 '17 at 07:10

DavidWeiss2

426
2
7

would you say an example – Jan 23 '17 at 07:14
Sure, in a hour or so. – DavidWeiss2 Jan 24 '17 at 09:00

return more than one value in c++

1 Answers1