Top 5 longest words
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- Plan:
- Read /usr/share/dict/words into an array.
- Make an array of lengths.
- Split things into functions.
- index of longest
- We’ll use malloc for everything
- Why malloc?
- We don’t know the size of the array / string before the program runs,
so we can’t use a fixed size allocation.
- We want to return an object of unknown size from a function, so we
can’t do a variable length array.
- This does mean that the caller must free. That’s part of the
function interface.
- Review
- Makefile first
- gcc command
- clean rule
- tabs
- Standard library functions and headers:
- stdio.h: printf, fscanf, fgets
- stdlib.h: atol
- math.h: ceil, sqrt – show manpage, talk about libm
- Casts. For numbers, these convert.
Introduce Memory Layout
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