need help with my code

Code (CSharp):

1.  
2.  
3.  
4. public int[] w;
5.  
6. void Start(){
7. w=new int[5];//so it will set size of w to 5 at the start
8. }
9.  
10.  
11.  

but i want to do it via a function like this

Code (CSharp):

1.  
2.     public void setSizeOfArrayInt(int[] varName,int size){
3.         varName= new int[size];
4.     }
5.  

but it's not working ,how can i fix it?

setSizeOfArrayInt(w,5);

 

Passing w into a function only passes the value through in a temporary local variable 'varName'.

If you want to assign a variable outside of the function scope as a parameter, you need to use the 'ref' or 'out' keywords for the parameter, to pass w as a reference.

Use 'ref' if the variable is initialized outside the function, use 'out' if the variable should be initialized inside the function.

Code (CSharp):

1. private void Start()
2. {
3.     int[] w;
4.     setSizeOfArray(out w, 5);
5. }
6.  
7. public void setSizeOfArray(out int[] varName, int size)
8. {
9.     varName = new int[size];
10. }