Data Types
Variables
Processing Data
Displaying Data
Algorithms
100
Data is represented by binary digits called
bits
100
Why is this NOT a proper variable name? 2010Income
Variable names cannot start with a number. NOTE: Variable names cannot contain spaces or special characters.
100
What is the purpose of the TryParse() method?
It is used to get the data into a variable from a text box.
100
Does the ToString() method change the value of sum in the following line of code? textBox3->Text=sum.ToString();
No, ToString() NEVER changes the value of the variable.
100
A detailed algorithm is called
low level algorithm
200
The values True and False are stored in variables of this type
boolean
200
Give an example of a "self documenting" variable. Give an example of a variable that is not "self documenting"
self-documenting: area stores the area of a shape not self-documenting: x stores a person's age.
200
How many parameters are required in the TryParse() method?
two, the object name (text box) and the variable name to which the value is being read.
200
Is the String data type a primitive or derived data type?
derived.
200
A general algorithm without any specific details is called
high level algorithm
300
Single characters are stored in variables with this data type
char
300
By default, when a numeric variable is declared, what value is initialized?
0
300
What character is the operand in the statement: num + 4
+
300
What is the purpose of the ToString() method?
converts data to string for display purposes.
300
algorithms are written in
pseudocode (or English)
400
Positive and negative whole numbers are stored in variables of this type
int
400
Give an example of a primitive data type. Give an example of a derived data type.
primitive: char, int, double, float, boolean derived: String
400
What character (s) indicate that the TryParse() method belongs to the system Int32 class?
::
400
"Hello World" could be stored in a variable of this type
String
400
Algorithms are programming language _________
independent
500
Single precision real numbers are stored in variables with this data type
float
500
What happens when the program declares a variable? (3 things)
1. allocates a memory space 2. assigns a name to that space 3. associates a data type to that space
500
An arithmetic expression is always made up of two _____ and one ______
two operands and one operator
500
What is contained in the parentheses in a ToString method?
nothing.
500
The purpose of an algorithm is
an organized list of steps used to solve a problem.
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