Odd and Even Numbers from Data.txt

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main()
{
    FILE *fp;
    int i=0,n,a[100],odd,even;
    fp = fopen("C:\\DATA.TXT","r+");
    if(fp==NULL)
    {
        printf("Can't print file");
        exit(1);
    }
    while(1)
    {
        n=getw(fp);
        if(n==EOF)
            break;
        a[i]=n;
        i++;
        putchar(n);
    }fclose(fp);
    printf("The odd terms are:-\n");
    fp=fopen("ODD.TXT","w+");
    for(i=0; a[i]!='\0'; i++)
        if(a[i]%2!=0)
            putw(a[i],fp);
    fclose(fp);
    fp=fopen("ODD.TXT","r");
    while(1)
    {
        odd = getw(fp);
        if(odd == EOF)
            break;
        putchar(odd);
    }fclose(fp);
    fp=fopen("EVEN.TXT","w+");
    for(i=0; a[i]!='\0'; i++)
        if(a[i]%2==0)
            putw(a[i],fp);
    fclose(fp);
    fp=fopen("EVEN.TXT","r");
    while(1)
    {
        even = getw(fp);
        if(even == EOF)
            break;
        putchar(even);
    }fclose(fp);
}