Code given in C Language to solve:

#include $"$ex$1.$h$"$

void update$($int$*$ a$,$int$*$ b$)$

$\{$

int temp$=*$a;

$*$a$=(*$a$+*$b$)$;

if$(*$b$>$temp$)$

$\{$

$*$b$=*$b$-$temp;

$\}$

else

$\{$

$*$b$=$temp$-(*$b$)$;

$\}$

$\}$

int main$()$

$\{$

int a$,$b;

scanf$("\%$d$",$&a$)$;

scanf$("\%$d$",$&b$)$;

update$($&a$,$&b$)$;

printf$("\%$d

$\%$d

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

return $0$;

$\}$