Bubble sort in string array

/******<soeasyprograms.blogspot.in>*****/

#include <stdio.h>
#include <conio.h>
#include <string.h>
#define MAX 50
#define N 2000
void sort_words(char *x[], int y);
void swap(char **, char **);
int main(void)
{
char word[MAX];
char *x[N];
int n = 0;
int i = 0;
for(i = 0; scanf("%s", word) == 1; ++i)
{
if(i >= N)
printf("Limit reached: %d\n", N), exit(1);
x[i] = calloc(strlen(word)+1, sizeof(char));
strcpy(x[i], word);
}
n = i;
sort_words(x, n);
for(i = 0; i < n; ++i)
printf("%s\n", x[i]);
return(0);
}
void sort_words(char *x[], int y)
{
int i = 0;
int j = 0;
for(i = 0; i < y; ++i)
for(j = i + 1; j < y; ++j)
if(strcmp(x[i], x[j]) > 0)
swap(&x[i], &x[j]);
}
void swap(char **p, char **q)
{
char *tmp;
tmp = *p;
*p = *q;
*q = tmp;
}