In a two’s complement number representation, our version of itoa does not handle the largest negative number, that is , the value of n equal to -(2^wordsize -1).Explain why not.Modify it to print that value correctly, regardless of the machine on which it runs.

#define abs(x)     ((x) < 0 ? -(x) : (x))

/* itoa :convert n to characters in s modified     */
void itoa(int n, char s[]){
     int i, sign;
     void reverse(char s[]);

     sign = n;   /* record sign */
     i = 0;
     do {     /*generate digits in reverse order */
        s[i++] = abs(n % 10) + '0';   /* get next digit */
     }while((n /= 10) != 0);         /*delete it */
     if (sign < 0)
         s[i++] = '-';
     s[i] = '\0';
     reverse(s);
}