I have been trying to shuffle this array from characters $33-126,$ and when i do it$,$ the final result adds an extra $0$ to it$,$ and i dont know why, it is shufflling all the values i want plus a null or $0$ character void generatingMixedSoup$($char soup$[])\{$

srand$($time$($NULL$))$;

const int numValidChars $=126-33$;

char validChars$[$numValidChars$]$;

for $($int i $=0$; i $<$ numValidChars $-1$; i$++)\{$

validChars$[$i$]=$ i $+33$;

printf$("$validChars$[\%$d$]=\%$c ASCII CODE: $\%$d

$",$ i$,$ validChars$[$i$],$ validChars$[$i$])$;

$//$printf$("\%$c$",$ validChars$[$i$])$;

$\}$

printf$("$

$")$;

$//$validChars$[$numValidChars $-1]=\text{'}\backslash 0\text{'}$;

for $($int i $=0$; i $<$ numValidChars; i$++)\{$

int swapIndex $=$ rand$()\%($numValidChars$)$;

char temp $=$ validChars$[$i$]$;

if $($validChars$[$i$]!=0)\{$

validChars$[$i$]=$ validChars$[$swapIndex$]$;

validChars$[$swapIndex$]=$ temp;

$\}$

$\}$

for $($int i $=0$; i $<$ numValidChars; i$++)\{$

printf$("$validChars$[\%$d$]=\%$c ASCII CODE: $\%$d

$",$ i$,$ validChars$[$i$],$ validChars$[$i$])$;

$\}$

$//$char soup$[11]$;

$/*$

for $($int i $=0$; i $<10$; i$++)\{$

if $($validChars$[$i$]=!\text{'}\backslash 0\text{'})\{$

soup$[$i$]=$ validChars$[$i$]$;

$\}$

printf$("$soup$[\%$d$]=\%$c

$",$ i$,$ soup$[$i$])$;

$\}$

$//$soup$[11]=\text{'}\backslash 0\text{'}$;

$//$printf$("$Soup: $\%$s

$",$ soup$)$;$*/$

$\}$

$/*$

void createSoup$($ char soup$[])\{$

printf$("$Soup: $\%$

$",$ soup$)$;

printf$("$Soup code: $")$;

for $($int i $=0$; soup$[$i$]!=\text{'}\backslash 0\text{'}$; i$++)\{$

printf$("\%$d$",$ soup$[$i$])$;

$\}$

printf$("$

$")$;

$\}$

$*/$

int main$()\{$

char soup$[10]$;

generatingMixedSoup$($soup$)$;

$//$createSoup$($soup$)$;

$\}$ this is the code i dont know what im doing wrong i am frustrated.