I need to combine two programs that can do the following

 (a) what ls command does and (b) to check each file name to print its content if its name has ".lst" extension. 

These are the two programs

Program - 1

/* * simple-ls.c * Extremely low-power ls clone. * ./simple-ls . */ #include  #include  #include  #include  int main(int argc, char **argv) { DIR *dp; struct dirent *dirp; if (argc != 2) { fprintf(stderr, "usage: %s dir_name ", argv[0]); exit(1); } if ((dp = opendir(argv[1])) == NULL ) { fprintf(stderr, "can't open '%s' ", argv[1]); exit(1); } while ((dirp = readdir(dp)) != NULL ) printf("%s ", dirp->d_name); closedir(dp); return(0); }

Program - 2

/* * Stripped down version of 'cat', using unbuffered I/O. * ./simple-cat < simple-cat.c */ #include  #include  #include  #define BUFFSIZE 32768 int main(int argc, char **argv) { int n; char buf[BUFFSIZE]; while ((n = read(STDIN_FILENO, buf, BUFFSIZE)) > 0) { if (write(STDOUT_FILENO, buf, n) != n) { fprintf(stderr, "write error "); exit(1); } } if (n < 0) { fprintf(stderr, "read error "); exit(1); } return(0); }

That is, you will design and implement this lscat.c program will do what simple-ls.c program does (to loop through each entry in the directory to be printed), and the program checks whether an entry is a file name and its name contains a character-pattern (".lst" at the end of the file name). If so, then it prints the file-content (that is, to open and print the content). For this part (to print the file content) the program may use the code-segment of "simple-cat" program. When the program prints the file-content, please have a user-friendly heading to show the beginning and the end of the file content being printed) as shown below (or you may have your own heading).

 *** Start of the file: sample.lst *** 

 ...

 *** End of the file: sample.lst ***

Thank You