首先,我们假设需要编写一个程序,用于计算1到n之间所有整数的和。下面是使用do-while循环实现的示例代码: importjava.util.Scanner;publicclassDoWhileExample{publicstaticvoidmain(String[]args){Scannerscanner=newScanner(System.in);System.out.print("请输入一个正整数:");intn=scanner.nextInt();intsum=0;inti...
Do not forget to increase the variable used in the condition, otherwise the loop will never end! Exercise? What is the difference between awhileloop and ado-whileloop? A do-while loop will execute at least once, while a while loop might not execute at all. ...
while是最基本的循环,它的结构为: while(布尔表达式){//循环内容} 只要布尔表达式为 true,循环就会一直执行下去。 实例 Test.java 文件代码: publicclassTest{publicstaticvoidmain(String[]args){intx=10;while(x<20){System.out.print("value of x :"+x);x++;System.out.print("\n");}}} 以上实例编...
Java do-while loop is used to execute a block of statements continuously until the given condition is true. The do-while loop in Java is similar towhile loopexcept that the condition is checked after the statements are executed, so do while loop guarantees the loop execution at least once. ...
And doing this will mean that your while condition is always true. So in essence, this is your code's logic: int x = 1; do { x = // some random value if (x != 0) { x = 0; } while (x == 0); Solution: don't do this. Use some other way to end your loop. For ...
Flowchart of Java do while loop Let's see the working of do...while loop. Example 3: Display Numbers from 1 to 5 // Java Program to display numbers from 1 to 5 import java.util.Scanner; // Program to find the sum of natural numbers from 1 to 100. class Main { public static ...
While loops in Java have a simpler structure than for loops because they don’t have an initialization or a step value. Their structure follows this order of execution: 1) boolean condition – if true, continue to next step; if false, exit loop 2) loop body 3) repeat from step 1 (boo...
while语句是一个循环语句，它会首先判断一个条件是否满足，如果条件满足，则执行后面紧跟着的语句或语句...
I am not sure what you are trying to do. You can implement a do-while loop like this: while True: stuff() if fail_condition: break Or: stuff() while not fail_condition: stuff() What are you doing trying to use a do while loop to print the stuff in the list? Why not just use...
Getting Stuck in an Infinite Loop One of the most common errors you can run into working withwhileloops is the dreaded infinite loop. You risk getting trapped in an infinitewhileloop if the statements within the loop body never render the boolean eventually untrue. Let’s return to our first...