When one loop appears inside another it is called
an indented loop
.
What is it called when one loop appears inside another?
A composition of loops is called
a nested loop
. The most common type of nested loops will be one loop inside another. The first loop is usually called the outer loop while the second loop is called the inner loop.
What do you mean by nested loop?
A nested loop is
a loop within a loop
, an inner loop within the body of an outer one. Then the second pass of the outer loop triggers the inner loop again. … This repeats until the outer loop finishes.
What is initialized before entering a while loop?
The variable counter is said to be controlling the loop. It is set to
zero
(called initialization) before entering the while loop structure and as long as it is less than 5 (five); the loop action will be executed.
Is the loop control variable initialized after entering the loop?
The loop control variable is
initialized after entering the loop
. In some cases, a loop control variable does not have to be initialized. You can either increment or decrement the loop control variable. … It is the programmer’s responsibility to initialize all variables that must start with a specific value.
What are the three steps that should occur in every loop?
- Initialize the loop variable (before the while loop)
- Test the loop variable (in the loop header)
- Change the loop variable (in the while loop body at the end)
Where While loops are used?
The while loop is used
to repeat a section of code an unknown number of times until a specific condition is met
. For example, say we want to know how many times a given number can be divided by 2 before it is less than or equal to 1.
What is nested loop with example?
The inner loop is nested inside the outer loop. Nested loops are useful when for each pass through the outer loop, you need to repeat some action on the data in the outer loop. For example,
you read a file line by line and for each line you must count how many times the word “the” is found
.
What are the 3 types of 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
.
How do you read a nested loop?
When a loop is nested inside another loop, the inner loop runs many times inside the outer loop. In each iteration of the outer loop, the inner loop will be re-started. The inner loop must finish all of its iterations before the outer loop can continue to its next iteration.
What controls the while loop?
The body of the while loop executes only when
the logical expression evaluates to be true
. Most usually there is a variable tested in the logical expression (for example: x<5). This variable is called the loop control variable.
What are two ways to end a loop?
The only way to exit a loop, in the usual circumstances is
for the loop condition to evaluate to false
. There are however, two control flow statements that allow you to change the control flow. continue causes the control flow to jump to the loop condition (for while, do while loops) or to the update (for for loops).
What is the difference between for and while loop?
for loop: for loop provides a concise way of writing the loop structure. Unlike a while loop,
a for statement consumes the initialization, condition and increment/decrement in one line
thereby providing a shorter, easy to debug structure of looping.
What are common mistakes made by programmers in coding loops?
Forgetting to initialize and alter the loop control variable
are common mistakes that programmers sometimes make. One set of instructions that operates on multiple, separate sets of data.
How many steps should occur in every properly functioning loop?
Flowchart and pseudocode segments contain
three steps
that should occur in every properly functioning loop: 1. You must provide a s_______ v____ for the variable that will control the loop.
What loop continues to repeat until the program is interrupted?
An infinite loop
continues to repeat until the program is interrupted. Infinite loops usually occur when the programmer forgets to write code inside the loop that makes the test condition false.
