How do I make a method that returns a string array in C++?

Question

I have a problem, I am trying to convert from C# to C++/CLI and I don't know how to return a string array in a method. The problem is that strings are showing up as numbers instead of strings.

Here is the Method:

static array<String^> ^Split(String^ Victim, char SplitPoint)
{
int Index=0;
        for each(char Char in Victim)
            if(Char==SplitPoint)
                Index++;
        array<String^> ^SplitStrings = gcnew array<String^>;
        Index=0;
        for each(char Char in Victim)
        {
            if(Char==SplitPoint)
                Index++;
            else
                SplitStrings[Index]=SplitStrings[Index]+Char;
        }
        return SplitStrings;
    };

and the original method in C# looks like this:

    public static string[] Split(string Victim, char SplitPoint)
    {
        int Index = 0;
        foreach (char Char in Victim)
            if (Char == SplitPoint)
                Index++;
        string[] SplitStrings = new string[Index + 1];
        Index = 0;
        foreach (char Char in Victim)
        {
            if (Char == SplitPoint)
            {
                Index++;
            }
            else
                SplitStrings[Index] = SplitStrings[Index] + Char;
        }
        return SplitStrings;
    }

Are you trying to return a managed array of managed strings, or are you trying to return a native array of native strings? — Nicol Bolas
– Nicol Bolas, Commented Jul 28, 2011 at 1:40
A little off-topic remark: using Char as a variable identifier makes your code really hard to read. — Camilo Sanchez
– Camilo Sanchez, Commented Jul 28, 2011 at 2:22
Oh, ya. I name variables really weird. And I think the System::String::Split Doesn't really work for this, but this took like two minutes in C# so it didn't really matter. — Carsen Daniel Yates
– Carsen Daniel Yates, Commented Jul 31, 2011 at 1:42

ildjarn · Accepted Answer · 2011-07-28 02:46:56Z

2

It's really unclear what your actual question is, so here's a direct translation of your C# code to C++/CLI:

public:
    static array<String^>^ Split(String^ Victim, wchar_t SplitPoint)
    {
        int Index = 0;
        for each (wchar_t Char in Victim)
            if (Char == SplitPoint)
                Index++;
        array<String^>^ SplitStrings = gcnew array<String^>(Index + 1);
        Index = 0;
        for each (wchar_t Char in Victim)
        {
            if (Char == SplitPoint)
                Index++;
            else
                SplitStrings[Index] = SplitStrings[Index] + Char;
        }
        return SplitStrings;
    }

In particular, note that char in C++/CLI equates to System::SByte, not System::Char -- the native name for the latter is wchar_t. (Also, you didn't specify the dimensions of SplitStrings.)

answered Jul 28, 2011 at 2:46

ildjarn

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