Here, the condition of the while loop is alwaysTrue. However, if the user entersend, the loop termiantes because of thebreakstatement. Pythonwhileloop with anelseclause In Python, awhileloop can have an optionalelseclause - that is executed once the loop condition isFalse. For example, coun...
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If the test expression in the while and do...while loop never evaluates to false, the body of loop will run forever. Such loops are called infinite loop. For example: Infinite while loop while (true) { // body of while loop } Infinite do...while loop do { // body of while loop...
PL/pgSQL while loop example The following example uses the while loop statement to display the value of a counter: do $$ declare counter integer := 0; begin while counter < 5 loop raise notice 'Counter %', counter; counter := counter + 1; end loop; end; $$; Output: NOTICE: Counte...
ExampleGet your own Python Server Print i as long as i is less than 6: i =1 whilei <6: print(i) i +=1 Try it Yourself » Note:remember to increment i, or else the loop will continue forever. Thewhileloop requires relevant variables to be ready, in this example we need to def...
运行结果:Value0: oneValue1: twoValue2: three提示在使用循环语句的时候,我们通常要注意不要无限循环而造成程序“僵死”,另外还要注意循环条件(循环判断表达式),以确保循环结果正确。原文链接:http://www.4u4v.net/php-for-in-the-loop-while-foreach-example-usage.html 0...
While循环中的嵌套函数-PHP 我有下面的代码,我试图修复。在这段代码中,我创建了一个类,其中有一个函数testcal()。在这个函数中,我连接到数据库,从表中执行select查询。对于结果集,我希望遍历并获取字段$field1,2,3的值。使用这些字段,我创建了另一个函数来抛出结果。
In the above example the loop is terminated when x becomes 5. Here we use break statement to terminate the while loop without completing it, therefore program control goes to outside the while - else structure and execute the next print statement. ...
Give me a perfect example of do while loop in real life sinario phploopswhiledodowhile 30th Apr 2017, 10:24 AM Yash Katyayan 5 Réponses Répondre + 16 do { wash_hands(); } while (hands_are_dirty()); do { eat(); } while (still_hungry()); do { brush_teeth(); } while...
1、死循环学会用法 a = 1 while True: print(a) a +=1 2、无限次输入，直到输对，...