ELS language School Computer Department 3 rd prep Computer Exam
Name: ------class: ------General revision term2 (year 2017) First : Put True OR False and correct the wrong:
1. The Variables of types (Single & Double) are used to store integers only. ( ) 2. The using of (Else) keyword is optional in If statement. ( ) 3. The (Select…Case) statement is used if there are more than two possible branches. ( ) 4. Logical error happens when user inputs numerical datatype instead of character datatype. ( ) 5. VB.net allows the (Implicit Conversion) in assignment statement if the value assigned in the right side is compatible with the data type of variable in the left side. ( ) 6. Variables and constants cannot be used except in the scope of their declaration. ( ) 7. The function IsNumeric () is used to check if the value is numeric and returns true or not so it returns false. ( ) 8. In (IF) statement the code that follows (Then) is executed when the result of the conditional expression is (False). ( ) 9. Rem is the Keyword used to add comments inside the code window. ( ) 10.One of the ways to Prevent the Runtime Errors is using (Try….Catch) statement ( ) 11. In case the value of keyword Step in (For .. Next) loop takes zero, the loop will repeated infinite number of repetition and never stops. ( ) 12.Anonymity is a form of cyber bullying. ( ) 13.Const B_ As Date = 7/2/1977 is the correct declaration for a constant . ( ) 14.In ( For ..next )looping statement the keyword step is a must. ( ) 15.You can use a variable of type( Byte) to store the value (400) ( ) Second : Choose the correct answer: 1. ------is the property that displays the item in (ListBox) control. ( Checked –- Items - Text ) 2. ------data type is used to store the logical value (true /false) . ( Char – Date - Boolean - Integer )
3. The result of the following arithmetic operation: 10 * 5 - (4+3 ) ^ 2 is------. ( 22 – 0 - 20 - 1 ) 4. ------is the mathematical operator that computes the remainder of the division expression. ( ^ – / - + - Mod ) 1 5. One of these variable names is invalid in Visual Basic.net ( UserAddress2 – User_Address - User@Address - none of the previous) 6. (Focus)is a ------for the TextBox that used to set the cursor focus inside the TextBox. ( Property – Method - Control ) 7. The reserved word ------is used to create a new line. (VbCrLf – Me - Dim - Underscore_ ) 8. The branching ------statement is used to check more than one conditional expression on one variable: [ ( IF …. Then) – (IF…. Then ….Else) – (Select ….Case )] 9. The error in this line of code :( Dem x as short) is considered a ------( Syntax Error – Logical Error- Runtime Error – All the previous) 10.The storage space in memory is occupied by the data type (Integer) is------( 1 Bytes – 2Bytes - 3 Bytes - 4 Bytes ) 11.It is a publication of hostile and vulgar words against one or more through a media and electronic communication. ( Harassment – Stalking - Flaming- Threats ) 12.------data type is used to store integers only. ( Char – Decimal - Single - Integer ) 13. When assigning a value in memory location (address) , this value is ------. ( Adding to the previous value – replacing by the previous value – subtracted from the previous value - – divided by the previous value ) 14.The command ( IF … then ) is called ------because it select or ignore one condition ( Single Selection – Multiple Selection - Double Selection – none of the previous) 15.The value of (S) after executing this loop ( For S = 5 To 1 Step -1) is ------( 0 – 1 - 2 – 5)
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Third : Complete :
1. ------is the Keyword used to declare a variable where ------is the Keyword used to declare a Constant.
2 2. ------, ------is the Keyword used to add comments inside the code window and compiler will neglect it.
3. ------is used to handle the errors during the program execution.
4. ------is a reserved word that expresses the current Form
5. The reserved word ------is used to create a new line.
6. The symbol ------is used to perform the concatenation of texts.
7. ------are used while assigning date or Time to a constant and ------are used while assigning abstract value to a variable of String data type.
8. The symbol ------is represent the assignment operator in VB
9. ------enables writing the long line of code in more than one line.
10. ------is a part of the code its result True or false according to a value or variables.
11. Declaration of sub procedures or function procedures is done on the ------level.
12. Procedures in VB.net have two types ------value and ------that returns value.
13. ------is a method used to set the cursor focus inside textbox control.
14. The values 3, 5 in this code (TextBox2.Text = Sum (3, 5) ) are called ------
15. We use ------loop statement when we don`t know the number of prepetition in advance.
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Fourth : With the help of the code, complete the following s :
(For … Next ) Loop (Do …. While ) Loop
Dim X , I As single X = 4.5 For I = 0 To 7 Step 3 X = X * 2 Next (A) This loop will be repeated for …………… times . (B) The loop ends when ……………………………………………...... (C) The value of the variable X after the loop …………… D)Rewrite the codes using DO …. While loop 3 Fifth : When this commands And keyword used:
command usage
1 IF…Then
2 IF…Then… Else
3 For…. Next
4 Select …. case
5 Do…While..Loop
6 Function
7 Sub
8 Comparison Operators
Sixth : Consider the following code, which receives the user age entered in (TextBox1)and types and displays a quote according to the age.
Dim age As Byte age = Me . TextBox1 . Text Select Case age Case 40 Label1 . Text = " Mature " Case IS < 2 Label1 . Text = " Baby " Case 2 To 10 Label1 . Text = " Child " Case 12 To 19 Label1 . Text = " Teenager " Case IS > = 20 Label1 . Text = " Adult " Case Else Label1 . Text = " Out Of The Game" End Select Write down the result displayed in (Label 1), when you enter the following values of age in Textbox1 4 Age 16 20 9 40 11 1
Result
Seventh : Write the codes to :
1. Display the even numbers in descending order from 1 to 20 in MsgBox using (For ..Next).
2. Copy the contents of TextBox1 control in TextBox2 .
3. clear the items from ListBox1.
4. Assign the value of TextBox1.Text to the variable Degree.
5