Parameter in a function

The "combination" is defined as char combination[6]. When newCombination is called, I want the parameter c string (combo) to be set to the combination variable, if the entire combo string is numeric.

I'm getting the error:
Can't convert char[] to char[6].
What does this mean??
---
Also what do you think of my looping logic for checking to ensure the whole "combo" is numeric? Is it alright?

Much appreciated as always =)

Code:

---

        void newCombination(char combo[])
        {

                //int intCombo = atoi(combo);
                int count = 0;

                for(int i = 0; i < 6;i++)
                {
                        if(isdigit(combo[i]))
                        {
                                count++;
                        }
                }
                if(count == 5)
                {
                        combination = combo;
                }

        }

---

pass size of array and array to the function and make for loop condition i<SIZE

Code:

---


void newCombination(char combo[]) //I would use char*
        {

                //int intCombo = atoi(combo);
                int count = 0;

                for(int i = 0; i < 6;i++)
//might want use size() so u can use function for any size of array..
                {
                        if(isdigit(combo[i])) count++;
                }
                if(count == 5) strcpy(combination,combo);  //cant use equal for c strings
        }

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char[] has no defined size so it might (I think) hold more then 6 char.
thats why u cant put char[] in a char[6]..