how to while loop

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While loop and do while loop

1. The while loop is to write the repeated actions in the code into a more concise and intuitive statement.2. Do While is literally recycled first.Similarities:① It is a loop structure. "While (loop condition)" is used to indicate the loop condition

Java Beginner: While loop

Last time we talked about a for loop, in a nutshell, A for loop is generally useful for controlling the number of executions of certain operations. But in fact, we are dealing with the actual problem, and we often encounter another situation where

Difference between a do while loop and A WHILE LOOP

Difference between a do while loop and A WHILE LOOP1. The do while loop first executes the loop body and then judges the loop condition. If it is true, the next loop is executed; otherwise, the loop is terminated;The while loop first determines the

Example of a For loop while loop doing while loop in JavaScript

Different types of loops JavaScript supports different types of loops:For-loop code block a certain number of timesFor/in-Looping through the properties of an objectWhile-loops the specified code block when the specified condition is

While loop statement, Do-while Loop statement, for Loop statement text tutorial detailed

the format of awhile loop statement: 1. Format: while (condition of the loop) { loop statement;} 2, while the Loop statement to note matters:1) The While Loop statement is typically the number of times a variable is controlled by its loop.2) The

An issue in which variables defined in a while loop under a pipe are referenced as empty when exiting a while loop

Recently, when I wrote a shell script, I defined some variables in the while loop, but when I called them after exiting, we found that the variable values were empty, and it took a whole day to find the cause:I'm just doing a rough experiment here,

Java Self-study note (third day)-while loop-do while loop-for loop-function-function overload

(1) While loop, do While loop: the difference between, while is to first judge the condition, then execute the statement. The Do while is executing the statement first, then judging the condition.while (loop condition expression) {do{EXECUTE

JAVA while loop, Do-while Loop, for loop

One, while loopInstance: Public class test{ publicstaticvoid main (string[] args) { int i = 1; while (i) { System.out.println (i); I+ +; }}}Second, Do-while cycle Public class test{

Conditional statement and while LOOP, conditional statement while loop

Conditional statement and while LOOP, conditional statement while loopI. conditional statement if ...... Else 1. Basic if statement Example: If the age of a person is greater than or equal to 18, "adult" is output; otherwise, "not adult" is output" #

Python essay 7 (while loop)

Using the While loopYou can use the while loop to count.1 while 5 : print (current_number) 1Let the user choose when to exitYou can use the while loop to keep the program running as the user wishes. prompt = " \ntell Me Something, and I'll

Well-off will accompany you to learn JAVA -------- While loop of the three major loops, java -------- while

Well-off will accompany you to learn JAVA -------- While loop of the three major loops, java -------- while The next three blogs will introduce the loop structure that is frequently used in JAVA. This article first introduces the While loop. While

Python Basics-----While loop exercise

I. Using while loop output 1 2 3 4 5 6 8 9 101 #!/USR/BIN/EVC Python 32 #-*-coding:utf-8-*-3 4 " "5 using while loop Output 1 2 3 4 5 6 8 96 " "7 8Count = 19 whilecount:Ten ifCount = = 7: One Pass A Else: - Print(count)

PHP_MySQL tutorial-the next day while loop and database operations

PHP_MySQL tutorial-the next day while loop and the first page of database operations while loop In this lesson, we will continue to use PHP and MySQL to write some simple and useful pages. We started to display the data in the database from the

Learning notes for while loop statements in php

You can use the for statement to control multiple variables to implement advanced applications with multiple loops.The following shows a program that uses the for statement to output a 9*9 multiplication table: The code is as follows:Copy code

<08> While loop introduction and basic format +while loop using traps + statistics keyboard input characters +

While loop introduction and basic Format (master): Loop structure: when the conditions are met, the program repeats the conditions that make up the loop structure of a piece of code:1) cyclic control conditions 2 )

C--(seven) while loop

Knowledge pointswhile cycledo. While Loop statementwhile looping and character processing• Circular use issues to be aware of=============================================As you know, the while and for loops have a similar function1. Think: Why is

Hello, C + + (21) As long as the day is not black, has been working on the site -4.3.1 while loop: As long as ... have been ...

4.3 Loop control statementsIn the real world, there is such a phenomenon:As long as the current oil in the tank is less than the tank capacity of 100 liters, the fuel tank has been refueling;has been continuously for the motherland hard work, as

Hello, C + + (21) As long as the sky is not black, has been working on the site -4.3.1 while loop: As long as ... have been ...

4.3 Loop control statementsIn the real world, there is such a phenomenon:As long as the current oil in the tank is less than the tank capacity of 100 liters, the fuel tank has been refueling;has been continuously for the motherland hard work, as

Use of the While loop of JavaScript

This article mainly introduces the use of JavaScript while loop, is the basic knowledge of JS learning, need friends can refer to the When writing a program, there may be a situation when you need to perform some actions over and over again. In

PHP_MySQL tutorial-page 1/2 of the next day while loop and Database Operations

Page 1 while LOOP In this lesson, we will continue to use PHP and MySQL to write some simple and useful pages. We started to display the data in the database from the database we created yesterday, but it will be slightly improved. First, we use the

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