created: 07/26/01; corrections 10/23/02

# CHAPTER 20 — Loop and Branch Examples

This chapter contains two example programs that illustrate structured programming of loops and branches. It also discusses how character strings and integer arrays are represented in assembly language.

#### Chapter Topics:

- Null terminated character strings.
- String length program.
- Integer arrays.
- Array summing program.

### QUESTION 1:

A character string is a sequence of bytes containing ascii patterns. What is at the end of a null-terminated string?