Re: Thinkin' Perl in C++

A C-String is an array of char's where the last element is a null character ( '\0' ) which evaluates to false in boolean context. Walk the array with a while loop and an index variable that you will increment++, looking for a '-'. When you find a '-', assign that element a '_'. When you reach a '\0', you're done.

size_t i = 0;
while( cstring[i] ) {
    if( cstring[i] == '-' )
        cstring[i] = '_';
    i++;
}
[download]

Or without an index, but with pointer arithmatic...

char * temp = cstring;
while( *temp ) {
    if( *temp == '-' )
        *temp = '_';
    temp++;
}
[download]

You did mention C strings. If you're using the string class, it's a little different.

Dave

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Re^2: Thinkin' Perl in C++ by salva (Canon) on Mar 01, 2012 at 16:57 UTC
I guess that when the OP talks about CString he is actually referring to the Windows C++ class CString, not to the C language strings (aka `char *`)	[reply] [d/l]
Re^3: Thinkin' Perl in C++ by mr.nick (Chaplain) on Mar 01, 2012 at 20:07 UTC
If it's truly CString, then: `CString sTest("This-has-dashes"); sTest.Replace('-','_');` [download] mr.nick ...	[reply] [d/l]
Re^3: Thinkin' Perl in C++ by davido (Cardinal) on Mar 01, 2012 at 16:59 UTC
Well, then he's on his own. ;) I don't know anything about the Windows CString class. :) Dave	[reply]