1. Program Flow
CSCE 121
J. Michael Moore

2. Structured Programming
Programmers used to use ‘goto’ a lot. This is universally considered BAD PRACTICE.
This resulted in “Spaghetti code” that was hard to follow / understand / debug.
Structured programming saw all programs as composed of three control structures.
While not the only programming paradigm, aspects of structured programming still apply today.

3. Control Structures
Sequence
Selection
Iteration

4. Sequence Selection Iteration Control Structures
The ordering of statements
Can include function calls
Essentially no “Decisions” are made.

5. Sequence Selection Iteration Control Structures Also called branching
Allows a block of code to be executed or not based on a “Decision/Question”
Allows for different paths through the code

6. Sequence Selection Iteration Control Structures Also called looping
Allows a block of code to be run repeatedly until a condition is satisfied