ine $5$ in the function below can be replaced with $\_\_\_\_.$

$1$ void strcopy $($char string$1[],$ char string$2[])$

$2\{$

$3$int i $=0$;

$4$

$5$while $($string$2[$i$]!=\text{'}\backslash 0\text{'})$

$6\{$

$7$string$1[$i$]=$ string$2[$i$]$;

$8$i$++$;

$9\}$

$10$string$1[$i$]=\text{'}\backslash 0\text{'}$;

$11\}$