1/5/2023 0 Comments Visual basic loopingThe Exit Do statement can provide an alternative way to exit a Do…Loop. It also enables you to test condition at either the start or the end of the loop. The Do.Loop structure gives you more flexibility than the While.End While Statement because it enables you to decide whether to end the loop when condition stops being True or when it first becomes True. For more information, see Nested Control Structures. You can also nest different kinds of control structures within each other. You can nest Do loops by putting one loop within another. This includes values of other data types, such as numeric types, that have been converted to Boolean. The condition usually results from a comparison of two values, but it can be any expression that evaluates to a Boolean Data Type value ( True or False). If you test at the end of the loop (in the Loop statement), the loop always runs at least one time. If you test condition at the start of the loop (in the Do statement), the loop might not run even one time. You can test condition only one time, at either the start or the end of the loop. You can use either While or Until to specify condition, but not both. If you want to repeat the statements a set number of times, the For.Next Statement is usually a better choice. Use a Do.Loop structure when you want to repeat a set of statements an indefinite number of times, until a condition is satisfied. Terminates the definition of the Do loop. Transfers control to the next iteration of the Do loop. One or more statements that are repeated while, or until, condition is True. If condition is Nothing, Visual Basic treats it as False. Repeat the loop until condition is False. These renovations include making BASIC object oriented and fully event driven, and overcoming the limitations of being interpreted, allowing programmers to generate a compiled executable code .Repeats a block of statements while a Boolean condition is True or until the condition becomes True. These improvements include not only enhancements to the development environment but also modernization of the core BASIC language as well. In the years since, Microsoft has continued to improve Visual Basic by releasing newer versions. ![]() Using BASIC's heritage of simplicity and its general syntax , this new development tool gave programmers an easy way to create Windows applications. To overcome this problem, Microsoft revived BASIC in 1991 by introducing Visual Basic 1.0. Extensive code had to be written to define precisely what the interface would look like as well as how a user would interact with it. ![]() Unfortunately, creating Windows-based programs was exceedingly difficult. As people began to realize the benefits of graphical operating systems, Microsoft Windows gained popularity. Most PCs were still using text-based operating systems. In the late 1980s, Microsoft Windows and other graphical user interfaces (GUIs) were still in their infancy. Thus, BASIC was commonly used for trivial or educational purposes, whereas "real" applications were usually developed in other languages. Despite its wide distribution and relative simplicity, BASIC was not able to compete with faster, compiled languages such as C or C++. ![]() Using that philosophy, Microsoft integrated a BASIC interpreter into its operating system MS-DOS. BASIC (Beginners All-purpose Symbolic Instruction Code) was originally an interpreted language that was designed to simplify the programming process and make programming more accessible to the world at large. The origins of Visual Basic are found in a programming language created in 1964 by John Kemeny and Thomas Kurtz. The major reason for its popularity is that it allows programmers to create Windows applications quickly and easily. Visual Basic is one of the most widely used programming languages in the world.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |