0
The purpose of using a 'test condition' inside of a loop statement/which is also called a 'conditional loop'; is to make the loop STOP counting.
Otherwise, you would have gone and created what is known as being called an 'endless loop'; which just keeps on running really quite endlessly, forevermore...!
To give a quick example, let's compare...
CONDITIONAL LOOP EXAMPLE
num% = 0
DO
num% = num% + 1
PRINT num%;
LOOP UNTIL num% = 3
END
Output...
1 2 3
Press any key to continue...
Here, when the LOOP's test condition is met: (num%=3); then, the loop stops counting up any further; the DO/LOOP block structure is broken out of; and, the final END statement will get executed.
UNCONDITIONAL LOOP EXAMPLE
Next, let's try re-writing the same above program; by removing the conditional statement part of the LOOP which says: (UNTIL num%=3)...
num% = 0
DO
num% = num% + 1
PRINT num%
LOOP
END
Output...
1 2 3 4 5 6 7 8 9 10 11 12 ....
...because there is no conditional test statement to make the loop stop repeating itself; therefore, it just keeps on endlessly counting upwards, instead; the program never breaks out of the DO/LOOP block; and, therefore never gets to reach the final END statement.
To make an 'unconditional loop' stop repeating itself inside of QBASIC IDE/Integrated Development Environment; then, use combination key press: [CTRL] + [BREAK]; and, this should make an 'endless loop' stop repeating itself any further; and, return you straight back to the Editor Screen where you can futher change/edit your code.
What else can I help you with?
What is the purpose of wend statement in while loop in gw-basic?
While--wend statement is used to execute a loop until a given condition is true.if the condition is false the loop ends and the program continous to the line following eend.
How do you print numbers as even numbers in a loop in qbasic?
To print even numbers in a loop in QBasic, you can use a FOR loop to iterate through a range of numbers and check if each number is even. An even number can be identified using the modulus operator (MOD). Here's a simple example: FOR i = 1 TO 20 IF i MOD 2 = 0 THEN PRINT i END IF NEXT i This code will print all even numbers from 1 to 20.
How do you print even number in qbasic?
In QBasic, you can print even numbers using a simple loop. For example, you can use a FOR loop to iterate through a range of numbers and then check if each number is even by using the modulus operator (MOD). Here's a sample code snippet: FOR i = 1 TO 20 IF i MOD 2 = 0 THEN PRINT i NEXT i This code will print all even numbers from 1 to 20.
How does a FOR loop work in GML?
FOR loops work as follows:{for( [initialize a variable]; [expression]; [increment the variable] ) {//Do this code}}Here as an example of a FOR loop:{for(i = 1; i < 10; i += 1) {show_message(string(i));}}What this will do is show a message 10 times displaying the value of "i" so you would get a message that says "1," another one after that saying "2," etc... The way this works is that you have the variable "i" initialized in the FOR loop. The FOR loop will keep looping until i >= 10, because the middle statement dictates that i must be smaller than 10 for the FOR loop activate. The third statement in the for loop is the statement that you increment the i variable with. If you change i += 1 to i -= 1 then the FOR loop would go on forever, freezing the game. This is a critical mistake to make when constructing a FOR loop (as is with any loop.)
What is the difference between the usage of semicolon and comma BASIC progamming?
A semicolon can be used for separating the initial value, condition, and increment statement within a for loop. A comma can be used to separate elements of an array and parameters for methods and classes.
What is the purpose of wend statement in while loop in gw-basic?
While--wend statement is used to execute a loop until a given condition is true.if the condition is false the loop ends and the program continous to the line following eend.
Do statement and For statement comparisons?
Do statement : Here the do loop exicutes once without cheching the condition and then the condition will be checked if condition becomes true then again loop begins from do and then exictes here if you are given value is n then loop exictues n+1 times.for statement : Here the for loop will be initilized first and the condition will be checked if the condition then the pointer enters the loop else not.And after completion of the loop the pointer again moves to the for statement and the increment/Decrement will be done as you provided in loop then the condition will be checked if satisfy then it enteres loop else not
How do you convert a while loop to a do loop?
input:while (condition) statementoutput:for (;condition;) statementor, if you mean do-while:do { if (condition) statement } while (condition);
What is purpose of break statement?
to terminate a loop.
Difference between for and while loop not in syntactically?
Well 'while' goes like this: while (condition) statement 'for': for (initialize; condition; after-each-loop) statement
Why you use while function in c?
It is a statement; you can create a loop with it: while (<condition>) <statement>
What is difference between for loop statement and do while statement in c language?
The for loop has an initializer, an end condition, a loop expression, and a body. The initializer always runs. If the end condition is not satisified, the loop ends or never starts. The loop expression runs at the end of each iteration. Note that the body of a for loop can run no times. The do while statement has a body and an end condition. The body is executed, and then the end condition determines if the loop will iterate. Like the for loop, the loop expression runs at the end of each iteration. Note that the body of a do while loop will run at least one time.
What is the difference between while dowhile?
While: If we can use while statement it will check the condition then proceed further loop statement.DoWhile: If we use dowhile, first execute loop statement then check the condition.
How can you define null statement in loop in C programming?
If you are using for loop for(;;); or you can also define condition and iterations but the loop has to close there itself without any statement inside it. In the similar way you can define while and do while loop without any statement.
Is it possible to use a for loop in place of a while loop?
Yes. while loop consist of only condition statement to make for loop look as while loop we can use syntax shown below: for(;condition;) eg: for(;i<=n;)
How do you do a nested loop using Qbasic?
There several methods: For/Next loop Do/While/Until loops You can have Do Loops within Do Loops.
What are three components that control the loop?
The three main components that control a loop are the initialization, the condition, and the increment/decrement statement. Initialization sets the starting point of the loop, the condition determines when the loop should continue running, and the increment/decrement statement updates the loop variable to progress towards the termination condition. Together, these components ensure that the loop executes the desired number of times and eventually exits when the condition is no longer met.
