Write a C Program to read number from file and write them in odd and even file

•  Program:

#include<stdio.h>

int main()
{
    FILE *f1,*f2,*f3;
    int number,i, n=10;

    printf("Contents of DATA file\n\n");

    f1 = fopen("DATA","w");
  
    for(i=0;i<n;i++)
    {
        scanf("%d",&number);
        if(number==-1)
        {
              break;
        }
        putw(number,f1);
    }
    fclose(f1);

    f1 = fopen("DATA","r");
    f2 = fopen("ODD","w");
    f3 = fopen("EVEN","w");

    while((number = getw(f1)) != EOF)
    {
        if(number%2==0)
   {
    putw(number,f3);
   }
        else
   {
    putw(number,f2);
   }
    }

    fclose(f1);
    fclose(f2);
    fclose(f3);

    f2 = fopen("ODD","r");
    f3 = fopen("EVEN","r");

    printf("\n\n Contents of ODD file \n\n");

    while((number = getw(f2)) != EOF)
  {
   printf("%d ",number);
  }


    printf("\n\nContents of EVEN file \n\n");

    while((number = getw(f3)) != EOF)
  {
   printf("%d ",number);
  }

    fclose(f2);
    fclose(f3);
    return 0;
}

•  Output:

Contents of DATA file

11 22 33 44 55 66 77 88 99 00 12 34 56 78 90 -1


 Contents of ODD file

11 33 55 77 99

Contents of EVEN file

22 44 66 88 0

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