compared in Software

Generate Data Matrix 2d barcode in Software compared
compared
Draw ECC200 In C#.NET
Using Barcode printer for .NET framework Control to generate, create Data Matrix ECC200 image in VS .NET applications.
SYNTAX
Data Matrix Generator In .NET Framework
Using Barcode generator for ASP.NET Control to generate, create Data Matrix 2d barcode image in ASP.NET applications.
FOR while AND do-while WITH A
Generate Data Matrix ECC200 In .NET
Using Barcode maker for VS .NET Control to generate, create Data Matrix 2d barcode image in .NET framework applications.
STATEMENTS
Data Matrix ECC200 Printer In VB.NET
Using Barcode printer for .NET Control to generate, create Data Matrix 2d barcode image in .NET applications.
A while STATEMENT
EAN-13 Supplement 5 Printer In VS .NET
Using Barcode encoder for ASP.NET Control to generate, create UPC - 13 image in ASP.NET applications.
Statement
Decoding Code 39 Extended In .NET
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
SINGLE STATEMENT BODY
Encoding UPC Code In .NET
Using Barcode maker for .NET framework Control to generate, create UPC A image in .NET framework applications.
while (Boolean_Expression)
Data Matrix ECC200 Encoder In Visual Basic .NET
Using Barcode generator for VS .NET Control to generate, create Data Matrix ECC200 image in .NET framework applications.
A while STATEMENT
Bar Code Scanner In VS .NET
Using Barcode reader for Visual Studio .NET Control to read, scan read, scan image in .NET applications.
WITH A
Encoding Bar Code In Visual Basic .NET
Using Barcode printer for VS .NET Control to generate, create bar code image in .NET framework applications.
MULTISTATEMENT BODY
Code 128 Maker In Visual Basic .NET
Using Barcode encoder for .NET framework Control to generate, create Code 128 Code Set C image in Visual Studio .NET applications.
while (Boolean_Expression) {
Generate Code 39 Full ASCII In Java
Using Barcode drawer for Java Control to generate, create Code 39 image in Java applications.
Statement_1 Statement_2
Code128 Creation In Visual Studio .NET
Using Barcode creator for .NET framework Control to generate, create Code 128 Code Set A image in .NET applications.
Statement_Last
Barcode Encoder In .NET Framework
Using Barcode creation for Visual Studio .NET Control to generate, create bar code image in VS .NET applications.
Loops
Data Matrix Recognizer In .NET Framework
Using Barcode decoder for .NET framework Control to read, scan read, scan image in VS .NET applications.
A do-while STATEMENT
Paint Barcode In Visual Basic .NET
Using Barcode generation for .NET framework Control to generate, create bar code image in Visual Studio .NET applications.
WITH A
Code 3/9 Generation In Visual Studio .NET
Using Barcode drawer for .NET framework Control to generate, create Code39 image in VS .NET applications.
SINGLE-STATEMENT BODY
Barcode Creator In .NET
Using Barcode creation for VS .NET Control to generate, create barcode image in .NET applications.
Statement
Make Bar Code In VS .NET
Using Barcode drawer for .NET Control to generate, create bar code image in VS .NET applications.
while (Boolean_Expression);
Create Data Matrix ECC200 In Java
Using Barcode generation for Java Control to generate, create Data Matrix 2d barcode image in Java applications.
A do-while STATEMENT
do {
WITH A
MULTISTATEMENT BODY
Do not forget the final semicolon
Statement_1 Statement_2
Statement_Last
} while (Boolean_Expression);
Display 24 Example of a while Statement (part 1 of 2)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 #include <iostream> using namespace std; int main( ) { int countDown; cout << "How many greetings do you want "; cin >> countDown; while (countDown > 0) { cout << "Hello "; countDown = countDown - 1; } cout << endl; cout << "That s all!\n"; return 0; }
Flow of Control
Display 24 Example of a while Statement (part 2 of 2)
SAMPLE DIALOGUE 1\
How many greetings do you want 3 Hello Hello Hello That s all!
SAMPLE DIALOGUE 2
How many greetings do you want 0 That s all!
The loop body is executed zero times
Display 25 Example of a do-while Statement (part 1 of 2)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 #include <iostream> using namespace std; int main( ) { int countDown; cout << "How many greetings do you want "; cin >> countDown; do { cout << "Hello "; countDown = countDown - 1; }while (countDown > 0); cout << endl; cout << "That s all!\n"; return 0; }
SAMPLE DIALOGUE 1
How many greetings do you want 3 Hello Hello Hello That s all!
Loops
Display 25 Example of a do-while Statement (part 2 of 2)
SAMPLE DIALOGUE 2
How many greetings do you want 0 Hello That s all!
The loop body is always executed at least once
The important difference between the while and do-while loops involves when the controlling Boolean expression is checked With a while statement, the Boolean expression is checked before the loop body is executed If the Boolean expression evaluates to false, the body is not executed at all With a do-while statement, the body of the loop is executed rst and the Boolean expression is checked after the loop body is executed Thus, the do-while statement always executes the loop body at least once After this start-up, the while loop and the do-while loop behave the same After each iteration of the loop body, the Boolean expression is again checked; if it is true, the loop is iterated again If it has changed from true to false, the loop statement ends The rst thing that happens when a while loop is executed is that the controlling Boolean expression is evaluated If the Boolean expression evaluates to false at that point, the body of the loop is never executed It may seem pointless to execute the body of a loop zero times, but that is sometimes the desired action For example, a while loop is often used to sum a list of numbers, but the list could be empty To be more speci c, a checkbook balancing program might use a while loop to sum the values of all the checks you have written in a month but you might take a month s vacation and write no checks at all In that case, there are zero numbers to sum and so the loop is iterated zero times
executing the body zero times
s INCREMENT AND DECREMENT OPERATORS REVISITED
In general, we discourage the use of the increment and decrement operators in expressions However, many programmers like to use them in the controlling Boolean expression of a while or do-while statement If done with care, this can work out satisfactorily An example is given in Display 26 Be sure to notice that in count++ <= numberOfItems, the value returned by count++ is the value of count before it is incremented
Flow of Control
Display 26 The Increment Operator in an Expression
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 #include <iostream> using namespace std; int main( ) { int numberOfItems, count, caloriesForItem, totalCalories; cout << "How many items did you eat today "; cin >> numberOfItems; totalCalories = 0; count = 1; cout << "Enter the number of calories in each of the\n" << numberOfItems << " items eaten:\n"; while (count++ <= numberOfItems) { cin >> caloriesForItem; totalCalories = totalCalories + caloriesForItem; } cout << "Total calories eaten today = " << totalCalories << endl; return 0; }