WHILE LOOP:先判断再执行,如果不满足条件,就不执行 FOR循环:已知要循环的次数. 如果明确知道循环次数,使用FOR循环; 如果不知道循环次数,但是知道循环结束条件,使用LOOP循环. 循环控制:EXIT与CONTINUE语句完成。PL/SQL程序与其他编程语言一样,也拥有自己的三种程序结构:顺序结构、分支结构、循环结构。这三种不同的结构...
[LOOP] [EXIT] ENDDO 功能:如果循环体中有LOOP命令,当遇到LOOP时就结束本次循环,不再执行它下面到ENDDO间的语句,提前返回DO WHILE进行下一次的循环判断;如果循环体中有EXIT命令,当遇到它时就结束循环执行ENDDO后的语句。 流程图如下: 二、例题讲解 例1编程显示学生表中除“李宁”以外的所有记录。 分析: 逐条操...
–Awk Do whileloop is called exit controlled loop, whereas awk while loop is called as entry controlled loop. Because while loop checks the condition first, then it decides to execute the body or not. But theawk do whileloop executes the body once, then repeats the body as long as the ...
Example 1 – Exit the Do While Loop When Specific Marks of a Student are Found In this example, we will find the student’s marks based on the student’s id and subject using a do-while conditional loop. Using the Exit Do command, when we find our desired value, we’ll exit the lo...
In this article, we show how to exit a while loop with a break statement in Python. So a while loop should be created so that a condition is reached that allows the while loop to terminate. This may be when the loop reaches a certain number, etc. ...
Exit Do: exits the do-while loop if the condition in line 7 is true. Else: executes if the condition in line 7 is false. i = i + 1: increments the loop counter “i” by 1. Loop: ends the do-while loop. Set Rng = Range(“D5:D14”): assigns the range D5:D14 to the va...
Breaking from a while Loop Use thebreakstatement to exit awhileloop when a particular condition realizes. The following script uses abreakinside awhileloop: #!/bin/bash i=0 while [[ $i -lt 11 ]] do if [[ "$i" == '2' ]] ...
百度试题 结果1 题目Exit FOR可以用在 循环结构中。( ) A. FOR…NEXT B. DO…LOOP UNTIL C. WHILE…END WHILE D. 以上皆可 相关知识点: 试题来源: 解析 A 反馈 收藏
在调试过程中发现fini_array内存不可写,不能通过直接写指针来让执行流形成loop。这里是本题最关键的难点。通过查阅资料后发现,在最后exit(0)的执行过程中会出现如下图的一处指令,来调用fini_array[0]处保存的指针: 其中r12为&fini_array[0]的值,而rdx固定为0,于是往前找可以找到如下控制r12的指令: ...
用于循环和程序模块中:DO和其他处理模块中(event block, dialog module, procedure (function module, method, subroutine))...ENDDO,WHILE...ENDWHILE,LOOP...ENDLOOP,SELECT...ENDSELECT 处理说明 1、 循环处理中,CHECK只是不执行本次循环的后续处理,继续调到下一次循环; ...