Computer Programming Concepts and Visual Basic David I. Schneider

EXAMPLE 2
The following program illustrates the use of the assignment statement and Print method with text.
Private Sub cmdShow_Click()
picOutput.Cls
phrase = “win or lose that counts.”
picOutput.Print “It’s not whether you ”; phrase
picOutput.Print “It’s whether I ”; phrase
End Sub
[Run, and then click the command button. The following is displayed in the picture box.]
It’s not whether you win or lose that counts.
It’s whether I win or lose that counts.
EXAMPLE 3
The following program has strings and numbers occurring together in a picBalance.Print statement.
Private Sub cmdCompute_Click()
picBalance.Cls
interestRate = 0.0655
principal = 100
phrase = “The balance after a year is”
picBalance.Print phrase; (1 + interestRate) * principal
End Sub
[Run, and then click the command button. The following is displayed in the picture box.]
The balance after a year is 106.55
■ CONCATENATION
Two strings can be combined to form a new string consisting of the strings joined together. The
joining operation is called concatenation and is represented by an ampersand (&). For instance,
“good” & “bye” is “goodbye”. A combination of strings and ampersands that can be
evaluated to form a string is called a string expression. The assignment statement and Print
method evaluate expressions before assigning them to variables or displaying them.
EXAMPLE 4
The following program illustrates concatenation.
Private Sub cmdDisplay_Click()
picQuote.Cls
quote1 = “The ballgame isn’t over, ”
quote2 = “until it’s over.”
quote = quote1 & quote2
picQuote.Print quote & “ Yogi Berra”
End Sub
[Run, and then click the command button. The following is displayed in the picture box.]
The ballgame isn’t over, until it’s over. Yogi Berra
Strings 43