无涯教程-C# - while 循环函数

只要给定的条件为真，C#中的while循环语句就会重复执行目标语句。

while - 语法

C#中While循环的语法是-

while(condition) {
   statement(s);
}

while - 流程图

这里，while循环的关键点是该循环可能永远不会运行。当测试条件并且输出为false时，将跳过循环体，并执行while循环后的第一个语句。

using System;
namespace Loops {
class Program {
static void Main(string[] args) {
/* 局部变量定义 */
int a = 10;
     </span><span class="com">/* while循环执行 */</span><span class="pln">
     </span><span class="kwd">while</span><span class="pln"> </span><span class="pun">(</span><span class="pln">a </span><span class="pun">&lt;</span><span class="pln"> </span><span class="lit">20</span><span class="pun">)</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
        </span><span class="typ">Console</span><span class="pun">.</span><span class="typ">WriteLine</span><span class="pun">(</span><span class="str">"value of a: {0}"</span><span class="pun">,</span><span class="pln"> a</span><span class="pun">);</span><span class="pln">
        a</span><span class="pun">++;</span><span class="pln">
     </span><span class="pun">}</span><span class="pln">
     </span><span class="typ">Console</span><span class="pun">.</span><span class="typ">ReadLine</span><span class="pun">();</span><span class="pln">
  </span><span class="pun">}</span><span class="pln">

}
} 

编译并执行上述代码时，将生成以下输出-

value of a: 10
value of a: 11
value of a: 12
value of a: 13
value of a: 14
value of a: 15
value of a: 16
value of a: 17
value of a: 18
value of a: 19

参考链接

www.learnfk.com/csharp/csha…