What are put out by the program scope$4.$c below? Predict the result before running the

program to verify your answer. Do the global variables a and b get modified in the

program?

scope$4.$c

#include

$8$ Tutorial and Practical Exercises

int a $=10$;

int b $=12$;

int ftn$2($int a$)$;

int ftn$($int b$)$;

int main$($void$)$

$\{$

int x $=$ ftn$($b$)$;

printf$("\%$d

$",$ x$)$;

return $0$;

$\}$

int ftn$($int b$)$

$\{$

b $=$ a;

printf$("\%$d

$",$ b$)$;

return ftn$2($a$)$;

$\}$

int ftn$2($int a$)$

$\{$

int c $=13$;

printf$("\%$d

$",$ a $+$ b$)$;

return $++$a;

$\}$