$[$Q$8$ Acu$$a$]$ Consider the following small C program. Implement the function called toupper$()$ which takes a C$-$style string and returns a version of it where lower case letters have been converted to uppercase. Assume that strings can only include letters and spaces. Hint: if there's a magic number you're looking for, it's probably $32.$ # stdio. h$>$

void toupper $($char$*$ str$)$ &

$/$ WWRITE THIS CODE

$\}$

void main $()\{$

char text $[]=$ "Some sample text";

toupper$($text$)$;

printf $("$is$",$ text$)$;$//$prints "SOME SAMPLE TEXT"

$\}$