Outline for April 9, 2025

Reading: zyBook §2.20, 6.1–6.8
Due: Homework #1, due April 14, 2024

1. Review of the CSIF and compiling

2. Quick review
   1. signed vs. unsigned [unsigned.c]
   2. Type casting [cast.c]
   3. Overflow and types [mult.c]
   4. Increment and decrement [ppmm.c]

3. Functions in C
   1. Parameters: pass (or call) by value [swap.c]
   2. Arguments: instantiations of parameters matched in order
   3. Return values
   4. Show the program stack and how it relates to functions

4. Pointers and indirection
   1. A pointer is an address
   2. Declarations
   3. Address (&), dereference (*) operators
   4. Indirect references

5. More on functions in C
   1. Parameters: pass (or call) by reference (also called output parameters)
   2. Example: swap function — exchange values of two variables (swap.c)

6. Pointers and Arrays
   1. Arrays as pointers (pointer constants)
   2. How indexing works
   3. Arrays as function parameters
   4. Multi-dimensional arrays

7. More on arrays
   1. Initializations
   2. Contrast with pointer initialization

8. C arrays and strings
   1. String representation: array of chars terminated by NUL (ASCII ‘\0’)
   2. gets(buf), fgets(buf, size, fp) [bad.c, good.c]

Matt Bishop Office: 2209 Watershed Sciences Phone: +1 (530) 752-8060 Email: mabishop@ucdavis.edu

ECS 36A, Programming & Problem Solving Version of April 10, 2025 at 8:11AM

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