本示例的FOR循环创建一个Mandelbrot图像。
代码如下 | 复制代码 |
using System; namespace a { class Program { public static void Main(string[] args) { double realCoord,imagCoord; double realTemp,imagTemp,realTemp2,arg; int iterations; for (imagCoord=1.2;imagCoord>=-1.2;imagCoord-=0.05) { for(realCoord=-0.6;realCoord<=1.77;realCoord+=0.03) { iterations=0; realTemp=realCoord; imagTemp=imagCoord; arg=(realCoord*realCoord)+(imagCoord*imagCoord); while((arg<4)&&(iterations<40)) { realTemp2=(realTemp*realTemp)-(imagTemp*imagTemp)-realCoord; imagTemp=(2*realTemp*imagTemp)-imagCoord; realTemp=realTemp2; arg=(realTemp*realTemp)+(imagTemp*imagTemp); iterations+=1; } switch (iterations % 4) { case 0: Console.Write("."); break; case 1: Console.Write("o"); break; case 2: Console.Write("0"); break; case 3: Console.Write("@"); break; } } Console.Write("n"); } Console.ReadKey(); } } } |
循环结构之DO语句
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。
代码如下 | 复制代码 |
using System; namespace a { class Program { public static void Main(string[] args) { double balance,interestRate,targetBalance; Console.WriteLine("What is your current balance?"); balance=Convert.ToDouble(Console.ReadLine()); Console.WriteLine("What is your current annual interest rate (in %)?"); interestRate= 1+Convert.ToDouble(Console.ReadLine())/100.0; Console.WriteLine("What balance would you like to have?"); targetBalance=Convert.ToDouble(Console.ReadLine()); int totalYears=0; do { balance*=interestRate; ++totalYears; } while(balance<targetBalance); Console.WriteLine("In {0} year {1} you'll have a balance of {2}.",totalYears,totalYears==1?"":"s",balan00ce); Console.ReadKey(); } } } |
总结
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。
时间: 2024-10-25 16:58:34