Thread: Recruiting people for the FAQ (at gunpoint if neccessary)

Ok I'll write something for it.
PM me with the wot you want it to be about.

As you know, I'm up for writing a comprehensive tutorial on almost anything (exept bitshifting... I would need to read ken's tut on that 1st haha). Keep me in mind!!!

SPH

I think we should make a palindrome(sp?) checker tutorial so we don't have to hear the same question over and over again.

I could do one for that password question (how do I make asteriks come up instead of letters?) if you want me to.

How about a howto on Matrix's? Three people have asked pretty much the same question within the past week (me included). So it doesn't seem that allocating a 2D array with 'new' is common knowledge.

I could write a basic one, a long with an alternative using malloc()

PALINDROMEMORDNILAP !!!

#include <iostream.h>
#include <string.h>
#include <ctype.h>

int ispalindrome(char *str);


void main(void)
{
char a[] = "aa";
char b[] = "Bro";
char c[] = "radar";
char d[] = "Radar";
char e[] = "boB";
char f[] = "a";

if(ispalindrome(a))
{
cout << "\n" << a << " is a palindrome";
}
else
{
cout << "\n" << a << " is not a palindrome";
}
if(ispalindrome(b))
{
cout << "\n" << b << " is a palindrome";
}
else
{
cout << "\n" << b << " is not a palindrome";
}
if(ispalindrome(c))
{
cout << "\n" << c << " is a palindrome";
}
else
{
cout << "\n" << c << " is not a palindrome";
}
if(ispalindrome(d))
{
cout << "\n" << d << " is a palindrome";
}
else
{
cout << "\n" << d << " is not a palindrome";
}
if(ispalindrome(e))
{
cout << "\n" << e << " is a palindrome";
}
else
{
cout << "\n" << e << " is not a palindrome";
}
if(ispalindrome(f))
{
cout << "\n" << f << " is a palindrome";
}
else
{
cout << "\n" << f << " is not a palindrome";
}
}


// The magic happens here
int ispalindrome(char *str)
{
int front, back;

front = 0;
back = strlen(str) - 1;
if(back < 0)
{
return(0);
}

while(tolower(*(str + front)) == tolower(*(str + back)) && front <= back) //I used tolower to make sure words
{ //with capitals in them would check ok (see the Radar example in main())
front++;
back--;
}
if(front >= back)
{
return(1);
}
else
{
return(0);
}
}

// cut here ================================



I also have some password program source, which works but was never fully polished (so it has some odd artifacts in the source and is a little ugly). It was made using Watcom C and is graphical, so unfortunately there are a lot of unportable graphical function calls and stuff, but still, if anyone is interested I should be able to find it.

I also have a DeleteAllBut program I wrote
(like the old loveable DOS utility DAB.exe) that does file name wildcard matching. It's around here somewhere too...

Yell if interested.

Rutabega
(still lurking after all these years)