Friday, December 7, 2012

Goto Statement

goto statement :

The goto statement transfers the program control directly to a labeled statement. It takes one of the following forms: Syntax
goto identifier;
goto case constant-expression;
goto default;


where: identifier A label. constant-expression A switch-case label.
Remarks
In the first form, the identifier indicates a label located in the current body, the same lexical scope, or an enclosing scope of the goto statement.
A common use of goto is to transfer control to a specific switch-case label or the default label in a switch statement.
The goto statement is also useful to get out of deeply nested loops.

Example

The following example demonstrates using goto to break out from nested loops.
// statements_goto.cs
// Nested search loops
using System;
public class GotoTest1 {
public static void Main()
{
int x = 200, y = 4;
int count = 0;
string[,] myArray = new string[x,y];
// Initialize the array:
for (int i = 0; i < x; i++)
    for (int j = 0; j < y; j++)
     myArray[i,j] = (++count).ToString();
// Read input:
Console.Write("Enter the number to search for: ");

// Input a string:
string myNumber = Console.ReadLine();

// Search:
for (int i = 0; i < x; i++)
 for (int j = 0; j < y; j++)
if (myArray[i,j].Equals(myNumber))
 goto Found;
Console.WriteLine("The number {0} was not found.", myNumber);
goto Finish;


Found: Console.WriteLine("The number {0} is found.", myNumber);

Finish: Console.WriteLine("End of search."); } }


Input


44

Sample Output


Enter the number to search for: 44  The number 44 is found.  End of search.

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