Hi all,

I have the following scenario:

Code:
int main()
{
   char a[] = "Hello";
   printf("Modified string: %s\n", modify_str(a));
}

char *modify_str(char *b)
{
   /* Insert a  '+'  after every letter in the string */
   /* "Hello" becomes "H+e+l+l+o+" */
   return b;
}
Now my...