Using Pointers on Vectors in C++ (Call by Reference from Funtion to Function)

[nabh4u]

Hi,

I have a problem referencing to Vectors using pointers i.e. I am not able to use "call by reference" on vector variables.

I have a "read()" function in "x.cpp" and "main()" in "y.cpp". I have 3 vector variables in Main(). I want the read function to read the values into the vector using the address I send of the vectors..

Sample code:

//x.cpp
void read(vector <int> a,vector <int> b,vector < vector <int> > c)
{
//a, b, c are vector variables referencing to the vectors in main of y.cpp
     
}
//y.cpp
void main()
{
      vector <int> a;
      vector <int> b;
      vector < vector <int> > c;
      
      read(&a,&b,&c);
      //Sending the reference to read function in x.cpp to modify data in main
}

I got a LNK#### error where # are numbers.

How do I get this program of mine to read values into the vectors by using references?

I need help as soon as possible

Thank You in Advance..

[horace1]

you need to indicated that the parameters to read() are pointers to vectors, e.g.

void read(vector <int> *a,vector <int> *b,vector < vector <int> > *c)

you are using C++ why not use reference parameters?