Task

Verify that a file called     input.txt     and   a directory called     docs     exist.



This should be done twice:  

   once for the current working directory,   and
   once for a file and a directory in the filesystem root.


Optional criteria (May 2015):   verify it works with:

   zero-length files
   an unusual filename:     `Abdu'l-Bahá.txt  


if (exists("input.txt")) {
    puts("The file \"input.txt\" exist");   
}
if (exists("/input.txt")) {
    puts("The file \"/input.txt\" exist");  
}
if (exists("docs")) {
    puts("The file \"docs\" exist");    
}
if (exists("/docs")) {
    puts("The file \"/docs\" exist");   
}