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Syntax errors
Errors in your code that break the rules of the language Spelling errors Capitalization errors Grammar errors Punctuation errors Spacing errors
What are the syntax errors in the following? i think that compooter science r0x
Semantic errors
Semantic ~ meaning
An error in logic
The program does not do what you wanted it to do
A program’s syntax may be ok, but have a semantic error
What is the semantic error in the following? “60% of the time it works every time”
Debug
Removing errors from your program
Where did the term “debug” come from?
http://americanhistory.si.edu/collections/comphist/objects/bug.htm
Exercises
1. Write a sentence that has a syntax error, but no semantic error.
2. Write a sentence that has a semantic error, but no syntax error.
3. Describe what a program is to a 12-year old
4. Assume my program executes, but crashes in the middle and fails to do what I wanted it to do. What error(s) are there?