What is wrong with the following code snippet?

void myfun$($char$*$ p$)$

$\{$

$*$p $=$ toupper$(*$p$)$;

$\}$

int main$()$

$\{$

string myword $=$ "YouHadMeAtHello";

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

$\{$

myfun$($myword$[$i$])$;

$\}$

cout $<<$ myword $<<$ endl;

return $0$;

$\}$