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A loop control variable that is incremented a specific number of times is known as?
A loop control variable is widly known as a "counter".
What is the last step in a loop usually?
increment the loop control variable
Use the control variable during the execution of the loop?
Control variable which is used in control structures.e.g. for(int i=0;i
A variable declared inside the for loop control cannot be referenced outside the loop?
Yes. A variable declared inside the loop is a local variable for the code block enclosed by the {} statements of the for loop. The variable will not be available to be used by any code outside the code block.
Why you need a for loop when you have already while loop or do while loop?
We need a for loop because the while and do-while loops do not make use of a control variable. Although you can implement a counter inside a while or do-while loop, the use of a control variable is not as self-evident as it is in a for loop. Aside from the use of a control variable, a for loop is largely the same as a while loop. However, it is quite different to a do-while loop, which always executes at least one iteration of the loop before evaluating the conditional expression. In a for and while loop, the conditional expression is always evaluated before entering the loop, which may result in the loop not executing at all.
A loop control variable that is incremented a specific number of times is known as?
A loop control variable is widly known as a "counter".
What is the last step in a loop usually?
increment the loop control variable
When a VBScript loop control variable is not altered during loop execution what kind of loop may result?
An infinite loop.
Use the control variable during the execution of the loop?
Control variable which is used in control structures.e.g. for(int i=0;i
A variable declared inside the for loop control cannot be referenced outside the loop?
Yes. A variable declared inside the loop is a local variable for the code block enclosed by the {} statements of the for loop. The variable will not be available to be used by any code outside the code block.
Why you need a for loop when you have already while loop or do while loop?
We need a for loop because the while and do-while loops do not make use of a control variable. Although you can implement a counter inside a while or do-while loop, the use of a control variable is not as self-evident as it is in a for loop. Aside from the use of a control variable, a for loop is largely the same as a while loop. However, it is quite different to a do-while loop, which always executes at least one iteration of the loop before evaluating the conditional expression. In a for and while loop, the conditional expression is always evaluated before entering the loop, which may result in the loop not executing at all.
What type of loop use a Boolean expression to control the number of times that it repeats a statement set of statements?
A counted loop. Typically we use a for loop for counted loops: // loop 10 times... for (int i=0; i<10; ++i) { // ... } We can also use while and do-while loops to do the same thing, however a for loop provides all the information up front where it belongs and we can localise the control variable. With while and do-while loops, the control variable must be declared outside the loop, and the increment is usually specified at the end of the loop. This makes while and do-while loops harder to read because the information that controls the loop is separated: // loop 10 times... int i = 0; while (i<10) { // ... ++i; } A do-while loop is similar to a while loop, but the control expression is placed at the end of the loop thus the loop always executes at least once. This also upsets the logic of a counted loop because the control variable is off-by-one. // loop 10 times... int i = 0; do { // ... ++i; } while (i<11);
What are the index variable in the for loop?
The for loop uses a counter or an index variable to loop through the statements. This variable is used through the loop, changed and finally compared with the loop condition for consideration of the loop's next cycle. The variable(s) used inside the for loop for comparison (with the mentioned condition) and increment/decrement is know as the index variable. for example (Java) : for(int i=1; i<5; i++){ ... } in this example, integer 'i' is the index variable.
What are the three actons a counter variable uses?
Variables don't have any "actions". A variable provides storage for a value, nothing more. A counter variable is typically used in a bounded for loop. A for loop has three clauses, each of which is optional. The first clause is the initialiser which can be used to initialise a control variable upon entry to a bounded loop. The second clause is the conditional expression which is evaluated at the start of each iteration. If that expression evaluates false, execution passes to the statement following the for statement, otherwise the body of the loop executes. The second clause is typically used to test the control variable is within the bounds of a bounded loop. The third clause is an operation that will be performed at the end of each iteration. In a bounded loop, this clause is typically used to increment the control variable. For example: for (int x=0; x<10; ++x) { /* ... */ } The above loop is a bounded loop that will execute the body of the loop 10 times. The control variable, x is first initialised to 0. At the start of each iteration, if x<10 is true, the body of the loop will execute one iteration. At the end of each iteration, the ++x statement increments x. When x is 10, the x<10 expression becomes false and execution passes to the statement immediately after the for loop.
Which piece of pseudocode represents incrementing the loop control variable called count?
count = count + 1
Three most common types of sentences errors?
there are three common error of looping structure. 1. initializing of loop control variable 2.error of condition 3.control of exit loop
What type of loop uses Boolean expression to control the number of times that it repeats a statement set of statements?
A counted loop. Typically we use a for loop for counted loops: // loop 10 times... for (int i=0; i<10; ++i) { // ... } We can also use while and do-while loops to do the same thing, however a for loop provides all the information up front where it belongs and we can localise the control variable. With while and do-while loops, the control variable must be declared outside the loop, and the increment is usually specified at the end of the loop. This makes while and do-while loops harder to read because the information that controls the loop is separated: // loop 10 times... int i = 0; while (i<10) { // ... ++i; } A do-while loop is similar to a while loop, but the control expression is placed at the end of the loop thus the loop always executes at least once. This also upsets the logic of a counted loop because the control variable is off-by-one. // loop 10 times... int i = 0; do { // ... ++i; } while (i<11);
