QBasic Tutorial 8 - Select Case Statements. QBasic Tutorial 8 - Select Case Statements - QB6. Description: Select- Case statements work like If statements. The difference is that the Select- Case statement can make the code simpler to read and work with than If statements. In some computer languages and computer systems, the Select- Case statements run faster than the If statements. SELECT CASE - QBASIC SELECT CASE adalah salah satu bentuk perintah kondisi dalam Qbasic selain IF THEN. Sekian soal SELECT CASE, jika ada contoh program yang tidak bisa jalan atau salah,, tolong kasih tau.Write a program to enter any number and find out whether it is even or odd using select case statement. Cls Input “Enter any number”;N. Beginner's Programming Tutorial in QBasic This document is meant to get you started into programming, and assumes you. The interpreter asks if you want to save the program. Select 'No' (or if you'd rather keep the program, select 'Yes'). QBasic Tutorial 8 - Select Case Statements - QB64 Description: Select-Case statements work like If statements. The next program will prompt the user to select the key A-D and the program will respond by telling the user what key was entered. Real life things will be much more complex. Lets try a 'real life' program. QBasic is capable of fairly. The next program will prompt the user to select the key A- D and the program will respond by telling the user what key was entered. We will create a Select- Case statement for the A- D keys entered. DIM Key. Pressed AS STRINGCLSPRINTPRINTINPUT. QBasic/Flow Control - Wikibooks, open books for an open world. Conditional execution. It is also possible to use the WHILE, DO UNTIL and CASE statements. All of these control conditional execution by using a Boolean logic 'test', the result of which is either TRUE or FALSE. To repeat a section of code for a set number of times, the FOR statement is used. The IF test can be executed in a single line, however it can also be used like the others to control a block of code. True or False. The tests are always mathematical in nature . We will cover exactly what these mean later on, but you probably understand the first two already. One of the most useful statements in QBasic is the IF statement. It allows you to choose what your program will do depending on the conditions you give it. The next few programs will be taking a look at ways to use the IF statement. To execute a block of code, the END IF is used. IF . You can follow the THEN statement(s) with ELSEIF . This does not create a new level of nesting. IF . If omitted the default is +1. The code contained within the FOR loop will always be executed at least once because it is only at the 'NEXT' statement that the value of the variable is checked against the end value. When the NEXT statement executes, the variable is modified by STEP value and compared against the end value. If the variable has not yet exceeded the end value, control is returned to the line following the FOR. You can exit a FOR loop early with the EXIT FOR command. FOR. BAS. When the WEND command is executed, it returns control to the WHILE statement (where the condition is tested again). When the condition evaluates to FALSE, control is passed to the statement following the WEND. WHILE. BAS. The < variable expression> is evaluated and compared against each CASE < value> in turn. When a CASE < value> is found to match, the . If an EXIT CASE is executed, control passes to the line following the END SELECT, otherwise the next CASE < value> is checked. If no matches are found, the CASE ELSE is executed. Note that < value> may be a number, character or string or logical expression (eg '> 0', '< > 1'). Note also that multiple CASE matches may be found and executed (so, for example, if two CASE < values> are 'CASE > 1' and 'CASE > 1. CASE > 1 and CASE > 1.
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