> value; sum = sum + value; count++; } cout "The sum of the 10 numbers is " sum endl; The variables sum and count are assigned the values 0 and 1 respectively.">

# Write a count-controlled loop that executes 10 times the world

Multiply two numbers 4. Also note that we are using the enumerate function when iterating over the days — because we need both the index of each time slot so that we can print the hour and the contents of that slot.

Consider the timetable example from the previous chapter — let us say that the timetable contains seven days, and each day contains 24 time slots. Subtract two numbers 3. The second type of loop is the event-controlled loop, which terminates when something has occurred inside the loop body.

The first two algorithms are based on counting — the first counts time, and the second counts distance. List comprehensions can be used to replace loops that are a lot more complicated than this — even nested loops.

If you wanted to iterate over a list using the classic-style for loop, you would have to count from zero to the end of the list, and then access each list element by its index.

When this happens, the body of the While loop is not executed again. The following diagram shows the difference between while and do-while loops.

This is usually some function of each item in the original iterable as it is processed. The for loop will step through each of the numbers in turn, performing the print action for each one.

Then, after each successfully completed execution of the loop body, you update your variable. While loops check for the stopping condition first, and may not execute the body of the loop at all if the condition is initially false. To stop this from happening, you might write a condition-controlled loop like this: The initialisation step, the condition and the update step are all defined in the section in parentheses on the first line.

For this same problem, we can write a program in another way: Add an event in the form of a string description to the second week in July. Here is an example of a for loop in Java: You read the newspaper as long as you are interested. We have also seen break used to jump out of switch statements.

The following examples would result in an infinite loop: Consider this example, in which we prompt a user for some personal details: A comprehension is a kind of filter which we can define on an iterable based on some condition.

Note that the above example could be improved by reporting to the user what the problem is if month is not in the range 1 to 12, and that it could also be done using a while loop if month were initialized to a value that ensures entering the loop.

If we were to write a computer program to simulate this behaviour, it would not be enough just to provide the steps and ask the computer to repeat them over and over. In the case where x is 5, the break statement will be encountered, and the flow of control will leave the loop immediately.

The variables in the expression the counter or event must be set initialized before the while statement is executed the first time.

Exit the program when the user selects 0. To add another property, all we have to do is add another name to the list.Java Loops & Methods.

The while loop. Syntax: while (condition is which in this case is called count. It executes a definite number of times. while loops can also be used as indefinite loops – when you can • If you know ahead of time exactly how many times loop should be executed, use a for loop.

You can “know” this if you. Count-controlled while loop Now let's look at the following C++ code: sum = 0; count = 1; while (count = 10) { cout "Enter a value: "; cin >> value; sum = sum + value; count++; } cout "The sum of the 10 numbers is " sum endl; The variables sum and count are assigned the values 0 and 1 respectively.

The first type of loop is the count-controlled loop, which is a loop that executes a specified number of times. The second type of loop is the event-controlled loop, which terminates when something has occurred inside the loop body.

A similar condition-controlled loop is a DO WHILE loop. This method differs from a WHILE condition-controlled loop in that the condition is checked at the end of the loop.

If the condition is. Count-controlled loops use a counter (also referred to as loop index) which counts specific items or values and causes the execution of the loop to terminate when the counter has incremented or decremented a set number of times.

The correct loop should use an integer counter to complete the loop a given number of times, and use the low end of the range and the increment as shown to calculate the floating point loop variable at the beginning of each iteration of the loop.

Write a count-controlled loop that executes 10 times the world
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