Csharp/C Sharp/Language Basics/Goto — различия между версиями
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Текущая версия на 14:39, 26 мая 2010
Demonstrate the goto
<source lang="csharp"> /* C#: The Complete Reference by Herbert Schildt Publisher: Osborne/McGraw-Hill (March 8, 2002) ISBN: 0072134852
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// Demonstrate the goto.
using System;
public class Use_goto {
public static void Main() { int i=0, j=0, k=0; for(i=0; i < 10; i++) { for(j=0; j < 10; j++ ) { for(k=0; k < 10; k++) { Console.WriteLine("i, j, k: " + i + " " + j + " " + k); if(k == 3) goto stop; } } }
stop:
Console.WriteLine("Stopped! i, j, k: " + i + ", " + j + " " + k); }
}
</source>
Goto Tester
<source lang="csharp"> /* Learning C# by Jesse Liberty Publisher: O"Reilly ISBN: 0596003765
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using System; public class GotoTester { public static void Main() { int counterVariable = 0; repeat: // the label Console.WriteLine( "counterVariable: {0}",counterVariable); // increment the counter counterVariable++; if (counterVariable < 10) goto repeat; // the dastardly deed } } </source>
the goto statement
<source lang="csharp"> /* Mastering Visual C# .NET by Jason Price, Mike Gunderloy Publisher: Sybex; ISBN: 0782129110
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/*
Example4_15.cs illustrates the use of the goto statement
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public class Example4_15 {
public static void Main() { int total = 0; int counter = 0; myLabel: counter++; total += counter; System.Console.WriteLine("counter = " + counter); if (counter < 5) { System.Console.WriteLine("goto myLabel"); goto myLabel; } System.Console.WriteLine("total = " + total); }
}
</source>
Use goto with a switch
<source lang="csharp"> /* C#: The Complete Reference by Herbert Schildt Publisher: Osborne/McGraw-Hill (March 8, 2002) ISBN: 0072134852
- /
// Use goto with a switch.
using System;
public class SwitchGoto {
public static void Main() { for(int i=1; i < 5; i++) { switch(i) { case 1: Console.WriteLine("In case 1"); goto case 3; case 2: Console.WriteLine("In case 2"); goto case 1; case 3: Console.WriteLine("In case 3"); goto default; default: Console.WriteLine("In default"); break; } Console.WriteLine(); }
// goto case 1; // Error! Can"t jump into a switch.
}
}
</source>