vector in header file

[en liten kille]

I want to create a funtion that adds two vectors in my header file.

the vectors look like this:

vector<int>vector1[3];
vector<int>vector2[3];

How should I initate them in the function without mention anything about their size?

[Moschops]

That appears to be two arrays, one containing 3 vector<int> objects and another also containing 3 vector<int> objects, so six vectors overall.

Is that what you mean, or do you just want two vector<int> objects?

[zb0S216C]

Those statements create 6 std::vectors that hold ints. Was that intentional?

en liten kille wrote:

How should I initate them in the function without mention anything about their size?

If what you wrote was in fact intentional, then you can obtain the length of one of those std::vectors by invoking std::vector::size( ), like so: vector1[0].size( ), or vector1.size( ).

_Wazzak

[Pravesh Koirala]

Its not so hard once you got the basics of vector. But it appears to me as if you do not have a good knowledge of them. Do you realise that you've created two array of 3 vectors? If you don't then I suggest having a look at
www.cplusplus.com/reference/stl/vector/

vector<int> vector1;
vector<int> vector2;
//Now add them. 

[en liten kille]

vector 1 and 2 shall contain one 3d vector.
If

vector1[0][x]=5;
vector1[1][x]=10;
vector1[2][x]=7;

and

vector2[0][x]=1;
vector2[1][x]=2;
vector2[2][x]=3;

I want to add them vector1 + vector2.
I wrote this but it didn't work.

int add_vectors(*vector<int>vector1, *vector<int>vector2){
    return({vector1[0] + vector2[0], vector1[1] + vector2[1], vector1[2] + vector2[2];})
}

[bluecoder]

you do not need array of vector . .

vector<int> vector1 ; 
vector<int< vector2; 
vector1.pushback(5);
vector1.pushback(10);
vector1.pushback(7);

vector2.pushback(1);
vector2.pushback(2);
vector2.pushback(3);

then pass it to the function and add like vector1[0] + vector2[0] ;

[S G H]

What about making a simple class, or a simple typedef?

typedef int[3] int_vector;
typedef float[3] float_vector;
typedef double[3] double_vector;

You will be able to declare a vector like this then:

int_vector Vector;
Vector[0] = ...
Vector[1] = ...
Vector[2] = ...