Write a function in C that splits a string of characters depending on a separator. The function will written a custom struct array.

Example usage should return an array of each substring.

$//$ possibly incorrect test usage:

int main$()\{$

char$*$ test$\_$str $=$ "abc def gh$-!"$;

char$*$ test$\_$sep $="-"$;

string$\_$array $*$res $=($string$\_$array$*)$malloc$($sizeof$($string$\_$array$))$;

res $=$ my$\_$split$($test$\_$str$,$ test$\_$sep$)$; $//$ should return $["$abd def gh$","!"]$

printf$("\%$s

$",$ res$->$array$)$;

free$($res$)$;

return $0$;

$\}$

$//$ my$\_$split.c

typedef struct s$\_$string$\_$array

$\{$

int size;

int subs;

char$**$ array;

$\}$ string$\_$array;

#endif

string$\_$array$*$ my$\_$split$($char$*$ str$,$ char$*$ c$\_$sep$)$

$\{$

string$\_$array$*$ arr $=($string$\_$array$*)$malloc$($sizeof$($string$\_$array$))$;

arr$->$size $=0$;

arr$->$subs $=0$;

arr$->$array $=$ NULL;

const char $*$tmp$\_$str;

tmp$\_$str $=$ str;

while $(*$tmp$\_$str$)$

$\{$

while $($tmp$\_$str $==$ c$\_$sep$)++$tmp$\_$str;

if$(*$tmp$\_$str$)$

$\{$

$++$arr$->$size;

$\}$

while $(*++$tmp$\_$str $!=\text{'}\backslash 0\text{'}$ && tmp$\_$str $!=$ c$\_$sep$)$;

$\}$

int found $=1$;

while $($found && $*$str$)$

$\{$

while $($str $==$ c$\_$sep$)++$str;

if $(*$str$)$

$\{$

const char $*$m$1=$ str; $//$ first match

while $(*++$str $!=\text{'}\backslash 0\text{'}$ && str $!=$ c$\_$sep$)$;

size$\_$t sz $=$ str $-$ ml;

char $*$m$\_$cur $=$ malloc$($sz$+1)$;

found $=$ m$\_$cur $!=$ NULL;

if $($found$)$

$\{$

char $**$tmp $=$ realloc$($arr$->$array, $($arr$->$subs$+1)*$ sizeof$($char $*))$;

found $=$ tmp $!=$ NULL;

if$($found$)$

$\{$

arr$->$array $=$ tmp;

strncpy$($m$\_$cur, ml$,$ sz$)$;

m$\_$cur$[$sz$]=\text{'}\backslash 0\text{'}$;

arrr$->$array$[$arr$->$subs$++]=$ m$\_$cur;

$\}$ else $\{$

free$($m$\_$cur$)$;

$\}$

$\}$

$\}$

$\}$

return arr;

$\}$