Something to do with character conversion, I just can not figure it out.

[nickb]

The program should accept the input, find to see if it is in the word, then replace the null character _ with the correct letter.

char Guess[15];
guess looks like this, depending on word size

_ _ _ _ _

void hangman::guessed()
{
    char Letter;
    int Correct=0;
    QString tochar;
 
    tochar = ui->lineEdit->text();
 
    QByteArray foo = tochar.toLatin1();
 
    char *letter = foo.data();
 
 
    Letter = *letter;
 
 
    // Loop through the word
    for(Subscript = 0; Subscript < Size; Subscript++)
    {
 
     //if the guess is good tell the user and update Guess
        if(copy.at(Subscript) == Letter)
 
 
     {
 
        Guess[Subscript] = Letter;
        Correct = 1;
        ui->textBox->append(Guess);

void hangman::guessed()
{
    char Letter;
    int Correct=0;
    QString tochar;

    tochar = ui->lineEdit->text();

    QByteArray foo = tochar.toLatin1();

    char *letter = foo.data();


    Letter = *letter;


    // Loop through the word
    for(Subscript = 0; Subscript < Size; Subscript++)
    {

     //if the guess is good tell the user and update Guess
        if(copy.at(Subscript) == Letter)


     {
        
        Guess[Subscript] = Letter;
        Correct = 1;
        ui->textBox->append(Guess);

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instead of proper output like, _ _ e _ _
the textbox gets this appended to it.

ð*º
ð*º
e*º
ð*º`è_¸Ñ¦««««««««îþîþ

I feel as though its clearly a failed data conversion, I just do not know what to attempt next.

[SixDegrees]

Lots of pointer confusion occurring here. I don't understand why you're using pointers in the first place; the conversions between Qt string/character objects and C-style strings is certainly part of what's causing your problem.

You ought to be able to write this routine entirely with QStrings and the functionality they provide. It's never a good idea to convert back and forth between different data representations unless there's no other way to accomplish something.