C Programming :: Const / Volatile Qualifier - Discussion

#include <stdio.h>
void fun1(void)
{
static int dummy = 5; 
dummy = dummy + 10; 
printf("%d",dummy);
}
void fun2(char *c)
{
*c = *c + 2;
printf("%d",dummy);
printf("%c", *c);
}
int main()
{
char ch = 'A'; 
fun1(); 
fun2(&ch); 
printf("%c", ch);
}