IntroToProgramming_Chapter4_StudyGuide

IntroToProgramming_Chapter4_StudyGuide - Intro to...

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Intro to Programming Chapter 4 Chapter 4 Review Questions 1. A conditional statement, when equal to True, can permit one or more other statements to execute. 2. A(n) relational operator determines if a specific relationship exists between two values. 3. Relational expressions can only be evaluated as True or False. 4. A(n) Flag is a Boolean variable that signals when some condition exists in a program. 5. A non-Boolean variable or expression is considered False if its value is 0. If its value is anything other than 0, it is considered True. 6. The If-Then-Else statement will execute one group of statements if the condition is true, and another group of statements if the condition is false. 7. The If-Then-ElseIf statement is like a chain of If. ..Then. ..Else statements. They perform their tests, one after the other, until one of them is found to be true. 8. A Nested If statement is an If statement in the conditionally executed code of another If statement. 9. Logical operators connect two or more relational expressions into one or reverse the logic of an expression. 10. The ToUpper method returns the uppercase equivalent of a string. 11. The ToLower returns a lowercase version of a string. 12. The IsNumeric intrinsic function accepts a string as its argument and returns True if the string contains a number, or False if the string's contents cannot be recognized as a number. 13. The Length method returns the number of characters in a string. 14. The TrimStart method returns a copy of a string without leading spaces. 15. The TrimEnd method returns a copy of a string without trailing spaces. 16. The Trim method returns a copy of the string without leading or trailing spaces. 17. The SubString method extracts a specified number of characters from within a specified position in a string. 18. You can display message boxes with the MessageBox.Show method. 19. The value ControlChars.CRLF can be concatenated with a string to produce multiple line displays. 20. In a(n) Select Case statement, one of several possible actions is taken, depending on the value of an expression. 21. Input Validation is the process of inspecting input values and determining whether they are valid. 22. Radio Button usually appear in groups and allow the user to select one of several possible actions. 23. Check Boxes may appear alone or in groups and allow the user to make yes/no, or on/off selections. 24. A Class-Level variable may be accessed by statements in any procedure in the same file as the
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IntroToProgramming_Chapter4_StudyGuide - Intro to...

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