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asp.net中for和do循环语句用法分享

时间:2021-07-01 10:21:17 帮助过:13人阅读

本示例的FOR循环创建一个Mandelbrot图像。
代码如下:
  1. <br>using System; <br>namespace a <br>{ <br>class Program <br>{ <br>public static void Main(string[] args) <br>{ <br>double realCoord,imagCoord; <br>double realTemp,imagTemp,realTemp2,arg; <br>int iterations; <br>for (imagCoord=1.2;imagCoord>=-1.2;imagCoord-=0.05) <br>{ <br>for(realCoord=-0.6;realCoord<=1.77;realCoord+=0.03) <br>{ <br>iterations=0; <br>realTemp=realCoord; <br>imagTemp=imagCoord; <br>arg=(realCoord*realCoord)+(imagCoord*imagCoord); <br>while((arg<4)&&(iterations<40)) <br>{ <br>realTemp2=(realTemp*realTemp)-(imagTemp*imagTemp)-realCoord; <br>imagTemp=(2*realTemp*imagTemp)-imagCoord; <br>realTemp=realTemp2; <br>arg=(realTemp*realTemp)+(imagTemp*imagTemp); <br>iterations+=1; <br>} <br>switch (iterations % 4) <br>{ <br>case 0: <br>Console.Write("."); <br>break; <br>case 1: <br>Console.Write("o"); <br>break; <br>case 2: <br>Console.Write("0"); <br>break; <br>case 3: <br>Console.Write("@"); <br>break; <br>} <br>} <br>Console.Write("n"); <br>} <br>Console.ReadKey(); <br>} <br>} <br>} <br> <br>循环结构之DO语句 <br>循环结构之DO语句,根据布尔值的测试结果,执行相应代码,DO语句至少执行一次。 <br><span><u></u></span> 代码如下:<pre class="brush:php;toolbar:false layui-box layui-code-view layui-code-notepad"><ol class="layui-code-ol"><li><br>using System; <br>namespace a <br>{ <br>class Program <br>{ <br>public static void Main(string[] args) <br>{ <br>double balance,interestRate,targetBalance; <br>Console.WriteLine("What is your current balance?"); <br>balance=Convert.ToDouble(Console.ReadLine()); <br>Console.WriteLine("What is your current annual interest rate (in %)?"); <br>interestRate= 1+Convert.ToDouble(Console.ReadLine())/100.0; <br>Console.WriteLine("What balance would you like to have?"); <br>targetBalance=Convert.ToDouble(Console.ReadLine()); <br>int totalYears=0; <br>do <br>{ <br>balance*=interestRate; <br>++totalYears; <br>} <br>while(balance<targetBalance); <br>Console.WriteLine("In {0} year {1} you'll have a balance of {2}.",totalYears,totalYears==1?"":"s",balan00ce); <br>Console.ReadKey(); <br>} <br>} <br>} <br> <br>总结 <br>DO语句在循环时不管条件是否成立它至少执行一次,页for循环语句如果条件不成立一次不执行了。</li><li> </li><li> </li></ol></pre>

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