space

[kedaman]

you can use memset() to fill something with any character

this will for instance put 3 spaces into "Something" starting at 2'nd character (buf[1])

    char buf[10]="Something";
    cout << (char*)memset(buf+1,' ',3)-1; 

[Amon Ra]

kedaman..thanks..
but lets say i do this

char buf[10]  = "boom";
cout << (char *)memset(buf + 1, ' ', 3) << endl;

it overwrites whats in the buf string...
this would give me "b "...maybe i am wrong and that's what space does?

[kedaman]

nope, youre correct, you get "b" and 3 spaces.

[Amon Ra]

lets say in my space function, the user gives a number of spaces to put in that is bigger than the number of char's in the char *..i have a condition statement checking for that, but if the function returns a char *, how would i break out of the function??

char *_space(char *str, int sz)
{
    char *buf;
    if ((sz < 0) || (sz > abs(strlen(str))))
        return '\0';
    buf = strdup(str);
    buf = (char *)memset(buf, ' ', sz);
        return buf;
} 

thanks

[kedaman]

Your string functions shouldn't be responsible for checking the lenght, you might as well have buffer left over and the termination null is halfway on it. Why not use memset directly?

[Amon Ra]

ok, i am sorry to bother you guys with stupid questions..

Dim iPos As Integer
    ' Strip chr$(0):
    iPos = InStr(sValue, Chr$(0))
    Do While iPos <> 0
        sValue = Left$(sValue, (iPos - 1)) & Mid$(sValue, (iPos + 1))
        iPos = InStr(sValue, Chr$(0))
    Loop 

i tried to put it into c++ like this:

    char *occur;
    occur = strstr(value, '\0');
    while (!(occur == 0))    {
        value = _left(value, (occur - 1)) & _mid(value, (occur + 1));
        occur = strstr(value, '\0');
    } 

after i was finished writing it , i thought: What the hell am i doing!!!..
could one of you guys please help me..thanks a lot..

[kedaman]

You want to strip off the nullchars? That wouldn't be too good since C strings are nullterminated, or do you want to strip a fixed length string of nullchars?

[Amon Ra]

the function is basically to get a value in an INI file..so i suppose i dont actually need to worry about nullchars, right?
however, could you plese quickly try to giveme an equivalent to

Dim iPos As Integer
    ' Strip chr$(0):
    iPos = InStr(sValue, Chr$(0))
    Do While iPos <> 0
        sValue = Left$(sValue, (iPos - 1)) & Mid$(sValue, (iPos + 1))
        iPos = InStr(sValue, Chr$(0)) 

in C++? thanks again..=)

[kedaman]

Not unless it's nessesary, I don't get why you search for nulls in a ini file. char arrays without terminating nullchars aren't C strings, which means they won't be compatible with the C string functions.