C Program of bmap algorithm

#include<protos.h>

void main()

{

    long int offset;

    clrscr();

    printf("Enter byteoffset : ";

    cin>>offset;

    int b_offset;

    int single=-1,doubles=-1,triples=-1;

    long int block=offset/1024;

        if(block < 266)

        {    single=block;

            b_offset=offset%1024;

            goto SKP;

        }

        else if(block > 266 && block < 65802)

        {    single=block/256;

            doubles=block%256-10;

            b_offset=offset%1024;

            goto SKP;

        }

        else if(block > 65802 && block<10000000)

        {    single=block/(256*256);

            long int temp=block%(256*256);

            doubles=temp/256;

            triples=temp%256;

            b_offset=offset%1024;

        }

    SKP:

    printf("\n%d %d %d %d single,doubles,triples,b_offset);

    getch();

}