loop: if (!condition) goto exit; {block}; goto loop; exit: 或as javascript AI代码解释 goto end; loop: {block}; end: if (condition) goto loop; 如果将代码重写为if (condition) do {block} while(condition);,结果将等同于: javascript AI代码解释 if (!condition) goto exit; loop: {block}...
do-while循环的与for循环,while循环的区别 一、循环结构的表达式不同 do-while循环结构表达式为:do{循环体;}。 for循环的结构表达式为:for(单次表达式;条件表达式;末尾循环体){中间循环体}。 while循环的结构表达式为:while(表达式){循环体}。 二、执行时判断方式不同 do-while循环将先运行一次,因为经过第一次...
There is one major difference you should be aware of when using the do--while loop vs. using a simple while loop: And that is when the check condition is made. In a do--while loop, the test condition evaluation is at the end of the loop. This means that the code inside of the...
while和do-while语句的异同之处 while型语句: “先判断,后执行”; while 执行流程: 当程序执行到 while 循环时 , 会首先判断小括号里的值 ,如果值 为假 :结束while语句 , 程序继续向下走 为真 :会把while 循环里大括号里的所有内容执行一次 , 全部执行完毕之后 ,会再度来到条件处 判断小括号里的值 , ...
do...while loop vs while loop The while loop checks the condition before executing the block of code; conversely, the do while loop checks the condition after executing the block of code. Therefore, the do while loop will always be executed at least once, even if the condition is false ...
do-while循环只有一种语法: <?php $i=0; do { echo$i; } while ($i>0); ?> 以上循环将正好运行一次,因为经过第一次循环后,当检查表达式的真值时,其值为false($i不大于 0)而导致循环终止。 资深的 C 语言用户可能熟悉另一种不同的do-while循环用法,把语句放在do-while(0) 之中,在循环内部用break...
do-while循环和while循环非常相似,区别在于表达式的值是在每次循环结束时检查而不是开始时。和一般的while循环主要的区别是do-while的循环语句保证会执行一次(表达式的真值在每次循环结束后检查),然而在一般的while循环中就不一定了(表达式真值在循环开始时检查,如果一开始就为false则整个循环立即终止)。
// infinite do...while loop constcount=1; do{ // body of loop }while(count==1) 在上述程序中,条件 condition 始终为 true。因此,循环体将运行无限次。 for VS while 循环 当迭代次数已知时,通常使用 for 循环。例如, // this loop is iterated 5 times ...
while loop Flowchart Syntax while(test condition){ //code to be executed } If the test condition inside the () becomes true, the body of the loop executes else loop terminates without execution. The process repeats until the test condition becomes false. Example: while loop in C // ...
Here is an example of an infinite do...while loop. // infinite do...while loop int count = 1; do { // body of loop } while(count == 1); In the above programs, the condition is always true. Hence, the loop body will run for infinite times. for vs while loops A for loop ...