Answer Posted / lior

void swap(char *s, char *p)
{
if(0 == s || 0 == p)
return;
*s += *p;
*p = *s - *p;
*s = *s - *p;
}

int main()
{
/* Use chars and not strings!! */
char ac = 'A';
char bc = 'B';
char *a = ∾
char *b = &bc;
swap(a,b);
}

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