>I have a series of programs that I would statistically like to see how
>they can be filled in for teaching purpouses. I have delimited the
>areas that are in question with ???.

>I work with solaris but almost anything could work.

>   /*
>   *   q2-f01.c -- demonstrates a memory mapped file.
>   *   To run type: q2 number
>   *   where number is the number of positions(bytes) from
>   *   the start of the file, which is 0.
>   *
>   *   use od -c q2.fun | more to see the file in bytes.
>   *
>   *     You are to fill in the missing code which is indicated
>   *     by 3 question marks. Do not forget to copy to your directory
>   *     the file q2.fun.
>   */

>   #include  <stdio.h>
>   #include  <stdlib.h>
>   #include  <fcntl.h>
>   #include  <unistd.h>
>   #include  <sys/types.h>
>   #include  <sys/mman.h>
>   #include  <sys/stat.h>
>   #include  <errno.h>

>   int main(int argc, char *argv[])
>   {
>       int fd, offset;
>       char *data;
>       struct stat sbuf;

>       if (argc != 2) {
>           fprintf(stderr, "usage: q2 offset\n");
>           exit(1);
>       }

>       if ((fd = open("q2.fun", O_RDONLY)) == -1) {
>           perror("open");
>           exit(1);
>       }

>       if (stat("q2.fun", ???) == -1) {
>           perror("stat");
>           exit(1);
>       }

>       offset = atoi(argv[1]);
>       if (offset  < 0 || offset >  sbuf.st_size-1) {
>           fprintf(stderr, "q2: offset must be in the range 0-%d\n",
>   sbuf.st_size-1);
>           exit(1);
>       }

>       if ((data = mmap(( ???, sbuf.st_size, ???, ???, fd, 0)) ==
>(caddr_t)(-1)) {
>           perror("mmap");
>           exit(1);
>       }

>       printf("byte at offset %d is '%c'\n", offset, data[offset]);

>       return 0;
>   }

> I have a series of programs that I would statistically like to see how
> they can be filled in for teaching purpouses. I have delimited the
> areas that are in question with ???.

> I work with solaris but almost anything could work.

>    /*
>    *   q2-f01.c -- demonstrates a memory mapped file.
>    *   To run type: q2 number
>    *   where number is the number of positions(bytes) from
>    *   the start of the file, which is 0.
>    *
>    *   use od -c q2.fun | more to see the file in bytes.
>    *
>    *     You are to fill in the missing code which is indicated
>    *     by 3 question marks. Do not forget to copy to your directory
>    *     the file q2.fun.
>    */

>    #include  <stdio.h>
>    #include  <stdlib.h>
>    #include  <fcntl.h>
>    #include  <unistd.h>
>    #include  <sys/types.h>
>    #include  <sys/mman.h>
>    #include  <sys/stat.h>
>    #include  <errno.h>

>> I have a series of programs that I would statistically like to see how
>> they can be filled in for teaching purpouses. I have delimited the
>> areas that are in question with ???.

>> I work with solaris but almost anything could work.

>>    /*
>>    *   q2-f01.c -- demonstrates a memory mapped file.
>>    *   To run type: q2 number
>>    *   where number is the number of positions(bytes) from
>>    *   the start of the file, which is 0.
>>    *
>>    *   use od -c q2.fun | more to see the file in bytes.
>>    *
>>    *     You are to fill in the missing code which is indicated
>>    *     by 3 question marks. Do not forget to copy to your directory
>>    *     the file q2.fun.
>>    */

>>    #include  <stdio.h>
>>    #include  <stdlib.h>
>>    #include  <fcntl.h>
>>    #include  <unistd.h>
>>    #include  <sys/types.h>
>>    #include  <sys/mman.h>
>>    #include  <sys/stat.h>
>>    #include  <errno.h>

>You include headers that are not described by the C standard, so your post
>is off topic for clc. The people over in comp.unix.programmer may know what
>these headers provide. Be aware, people don't like doing homework on
>usenet, so you should provide your solution in the post as well.
>Tobias.

> I have a series of programs that I would statistically like to see how
> they can be filled in for teaching purpouses. I have delimited the
> areas that are in question with ???.

> I work with solaris but almost anything could work.

>    /*
>    *   q2-f01.c -- demonstrates a memory mapped file.
>    *   To run type: q2 number
>    *   where number is the number of positions(bytes) from
>    *   the start of the file, which is 0.
>    *
>    *   use od -c q2.fun | more to see the file in bytes.
>    *
>    *     You are to fill in the missing code which is indicated
>    *     by 3 question marks. Do not forget to copy to your directory
>    *     the file q2.fun.
>    */

>    #include  <stdio.h>
>    #include  <stdlib.h>
>    #include  <fcntl.h>
>    #include  <unistd.h>
>    #include  <sys/types.h>
>    #include  <sys/mman.h>
>    #include  <sys/stat.h>
>    #include  <errno.h>

>    int main(int argc, char *argv[])
>    {
>        int fd, offset;
>        char *data;
>        struct stat sbuf;

>        if (argc != 2) {
>            fprintf(stderr, "usage: q2 offset\n");
>            exit(1);
>        }

>        if ((fd = open("q2.fun", O_RDONLY)) == -1) {
>            perror("open");
>            exit(1);
>        }

>        if (stat("q2.fun", ???) == -1) {
>            perror("stat");
>            exit(1);
>        }

>        offset = atoi(argv[1]);
>        if (offset  < 0 || offset >  sbuf.st_size-1) {
>            fprintf(stderr, "q2: offset must be in the range 0-%d\n",
>    sbuf.st_size-1);
>            exit(1);
>        }

>        if ((data = mmap(( ???, sbuf.st_size, ???, ???, fd, 0)) ==
> (caddr_t)(-1)) {
>            perror("mmap");
>            exit(1);
>        }

>        printf("byte at offset %d is '%c'\n", offset, data[offset]);

>        return 0;
>    }