PHP code that generates words to C,C++ code - php

Question

I had to develop a mini program that generates words from the given letters and some rules. I did this in PHP and it works great, BUT: now I need this code translated to C or C++. I've tried to implement it, but I have some troubles with string arrays. Moreover, I'm not good in C, even C++.
Someone, please help me to implement this code. Will do smth for you if I can. Thank you.
Here is the code attached:
<?php
$val_n = array("S","D","R");
$val_t = array("a","b","c","d","f");
$reguli = array(
array("S" => "aS"),
array("S" => "bD"),
array("S" => "fR"),
array("D" => "cD"),
array("D" => "dR"),
array("R" => 'bR')
);
$rez = array();
$pas = array();
$parcurgere = array();
$parc_sf = array();
function generare($val_n, $reguli, $cuvint, $parcurgere)
{
global $rez;
global $pas;
global $parcurgere;
global $parc_sf;
if( strlen($cuvint) >= 6)
{
if( $cuvint[strlen($cuvint) -1] == 'R' )
{
$cuvint[strlen($cuvint) -1] = "f";
if( ! in_array($cuvint, $rez) )
{
$rez[] = $cuvint;
array_push($parc_sf,$cuvint[strlen($cuvint) -1] = "f");
array_push($pas,$parcurgere);
}
} else if( $cuvint[strlen($cuvint) -1] == 'D' )
{
$cuvint[strlen($cuvint) -1] = "d";
if( ! in_array($cuvint, $rez) )
{
$rez[] = $cuvint;
array_push($parc_sf,$cuvint[strlen($cuvint) -1] = "d");
array_push($pas,$parcurgere);
}
}
} else if( $cuvint[strlen($cuvint) -1] != 'f' || $cuvint[strlen($cuvint) -1] != 'd')
{
foreach($reguli as $reg)
{
if(isset($reg[substr($cuvint, -1)]))
{
$pasi = $reg[substr($cuvint, -1)];
array_push($parcurgere,$pasi);
$cuvint .= $reg[substr($cuvint, -1)];
//$cuvint[strlen($cuvint)-3] = '';
generare($val_n, $reguli, $cuvint, $parcurgere);
}
}
}
}
$cuvint = "S";
$pasi = '';
generare($vn, $reguli, $cuvint, $parcurgere);
?>

Answer 1

I would suggest to look at std::vector which represents arrays that can change in size.
For the associate arrays (array("S" => "aS")), you can look at std::map or std::unordered_map