WebJun 6, 2024 · Here is the difference table: while. do-while. Condition is checked first then statement (s) is executed. Statement (s) is executed atleast once, thereafter condition is checked. It might occur statement (s) is executed zero times, If condition is false. At least once the statement (s) is executed. WebQQ在线，随时响应！. do…while 循环不经常使用，其主要用于人机交互。. 它的格式是：. 注意，while 后面的分号千万不能省略。. do…while 和 while 的执行过程非常相似，唯一的区别是：“do…while 是先执行一次循环体，然后再判别表达式”。. 当表达式为“真”时 ...
for循环、while循环、do...while循环 - 知乎 - 知乎专栏
Webvar n = 1; while (true){alert (n ++); if (n == 10){break}} //创建一个循环，往往需要三个步骤 //1. 初始化一个变量 var i = 1; //2. 在循环中设置一个条件表达式 while (i <= 50){//3. 定义 … WebJun 19, 2024 · The loop do..while repeats while both checks are truthy: The check for num <= 100 – that is, the entered value is still not greater than 100. The check && num is false when num is null or an empty string. Then the while loop stops too. P.S. If num is null then num <= 100 is true, so without the 2nd check the loop wouldn’t stop if the user ... bananen flambiert
loops - For vs. while in C programming? - Stack Overflow
Weblet i = 1; do { console. log ( "嘿嘿嘿"); // 必执行一次 i++; } while (i > 5); // 条件不成立 循环结束 复制代码 总结. 1.三种循环结构语句之间可以互转，只不过每一种语句的适用场景不 … WebOct 12, 2024 · A while loop will always evaluate the condition first.. while (condition) { //gets executed after condition is checked } A do/while loop will always execute the code in the do{} block first and then evaluate the condition.. do { //gets executed at least once } while (condition); A for loop allows you to initiate a counter variable, a check condition, and a … Web比如这是while：. for (;condition;) { } while (condition) { } 可以看到 while 跟 for 的语法糖没啥区别。. 而do while循环翻译成for之后的形态是不优雅的。. 本身也足够特别，值得单独 … bananenflanke