how to get substring from WCHAR array

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VisualC++

I have one array of WCHAR is like this

WCHAR Path[256]; so I'm passing this array in my function getpath(Path) and It's filling the value in path like this: //device/systemName/

So I want to get only device from above string

My code is here

WCHAR *pDevName;

int i = 0;
int j = 0;   
while(Path[i] != NULL){ 
    if(0 ==(wcscmp(Path, L"/")))
    {
        
        //i = i + 2;
        ++i;
        continue;
    }
    
    else
    {
        pDevName[j] = Path[i];
        
        ++i;
        ++j;
        if (0 == wcscmp(Path, L"/")){
            break;
        }
    }

My code is getting compiled but It's not returning for me device from WCHAR array. It's returing //devicename/systemName/. which is coming from pDevName.

I have doubt over my comparison on wcscmp(). SO my question is how to compare / with remaining wchar array value.

P.S. : devicename could be anything like c: or xyz.

Please help It's very urgent for me.