Answer:
Four types of errors program should test for user input are given in explanation
Explanation:
1. Program should test that extension contains exactly three letters
2. Program should test that extension doesn't contain any number or special character
3. Program should test that extension doesn't contain any white space
4. Program should test that extension doesn't contain any punctuation mark
Having to compare results on experiments or lab tests to each other.
Answer:
<u>web 2.0 internet</u>
<u>Explanation:</u>
<u>Explanation:</u>
Tim O Reilly in 2004 changed the web with his web 2.0 concept which according to him at the time would allow enable the user to generate content.
