• CB Proofs
• Errors
  • Notes

CB Proofs

Errors

• errors are a part of coding, they are expected
• Types of Errors:
  • Logic Errors
  • Syntax Errors
  • Run-time Errors
  • Overflow Errors
• Logic Errors - make mistake in algorithm, causing the program to behave differently
• Syntax Errors - making a typo on the code, causing the program to not run (colon/semicolon, parenthesis, braces, indentation, quotes, var def)
• Run-time Errors - works for a bit and then crashes, caused by a certain line of code in the sequence (called a bug)
  • divide by 0
  • improper user input
• Overflow Errors - result in certain values that are too big to show or to calculate

Notes

• A program is developed from an idea and a specific purpose in mind.
• Developers start investigating the problem/purpose and reflect.
• Developers must:
  • determine requirements of program
  • understand the constraints (ex: time)
  • understand user concerns/interests
• Developers investigate using surveys, user testing, interviews, direct observations
• Developers design program by brainstorming, storyboard, plan user experience, layout user interface, organize into modules, develop a testing strategy
• Developers decide on the program requirements that describe how a program should behave, include a liste of user interactions
• Developers create a prototype of program
• Testing, testing, testing!! Very important at micro level and macro level