delete following files,redundant

[Sameeranjoshi]

delete following:

    datatypes_sizes.c
exercise_1-13(horizontal).c
exercise_1-13(vertical).c 	
exercise_1-14.c 	
    and the folder chapter_1
    and a.out

[Sameeranjoshi]

added a.out

[justinekizhak]

Check ff93a8d
Is this what you want?

[Sameeranjoshi]

Yes,