what is the difference between for loop and while loop?
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In 'for' loop the initialization once done is never repeated. In while loop if initialization is done during condition checking, then initialization is done each time the loop iterate. In 'for' loop iteration statement is written at top, hence, executes only after all statements in loop are executed.
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The while loop is known as a pretest loop, which means it tests its expression before each iteration. This is an infinite loop because it does not contain a statement that changes the value of the number variable.
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The for loop is a repetition control structure that allows the programmer to efficiently write a loop that needs to execute a specific number of times. The while loop is a repetition control structure that executes target statements as long as the given condition is true.
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The syntax of a while loop in MATLAB is − while <expression> <statements> end. The while loop repeatedly executes program statement(s) as long as the expression remains true. An expression is true when the result is nonempty and contains all nonzero elements (logical or real numeric). Otherwise, the expression is false ...
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The difference between recursion and loop is that recursion is a mechanism to call a function within the same function while loop is a control structure that allows executing a set of instructions again and again until the given condition is true.
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Which two statements are true about the while loop. The statement in a while loop will execute zero or more times. If the condition of a pre-test loop is false, the statements in the loop are never executed.
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A WHILE loop statement repeatedly executes a target statement as long as a given condition is true. WHILE <logical expression> <statement block>. ENDWHILE. The statement block may be a single statement or a block of statements.
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A pretest loop tests its condition before each iteration. A posttest loop tests its condition after each iteration. ... The while loop is a pretest loop and the do-while loop is a posttest loop.
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In while and for loops the condition is checked before the control enters the loop. In do-while it's checked at the end of the loop. Syntax-wise, in do-while there is a semicolon at the end of the condition. In while and for, there is no semicolon after the condition.
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Python doesn't have do-while loop. But we can create a program like this. The do while loop is used to check condition after executing the statement. It is like while loop but it is executed at least once.
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Visual Basic/Loops. Loops are control structures used to repeat a given section of code a certain number of times or until a particular condition is met. Visual Basic has three main types of loops: for.. next loops, do loops and while loops.
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Loop refers to the code... iteration refers to the process in which the content of loop is executed once.. so 1 iteration refers to 1 time execution of loop.. so basically one loop can undergo many iterations..
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What is the difference between while and do-while loops in C? While loop is executed only when given condition is true. Whereas, do-while loop is executed for first time irrespective of the condition. After executing while loop for first time, then condition is checked.
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A similar condition-controlled loop is a DO WHILE loop. ... With the WHILE loop the condition is checked at the beginning, and, with count > 4, the code is not executed and nothing is output. With the DO WHILE loop, we would get an output of 4 because the condition is checked after the print statement is executed.
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4 Answers. An if statement checks if an expression is true or false, and then runs the code inside the statement only if it is true. ... A while statement is a loop. Basically, it continues to execute the code in the while statement for however long the expression is true.
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Python doesn't have do-while loop. ... The do while loop is used to check condition after executing the statement. It is like while loop but it is executed at least once.
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In while and for loops the condition is checked before the control enters the loop. ... In while and for, there is no semicolon after the condition. A do-while loop executes at least once, regardless of the condition. This is not true with for and while loops.