Some string operations : String « Data Types « C# / C Sharp

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C# / C Sharp » Data Types » String 




Some string operations
Some string operations
  
/*
C#: The Complete Reference 
by Herbert Schildt 

Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Some string operations.  
  
using System;  
  
public class StrOps {   
  public static void Main() {   
    string str1 =  
      "When it comes to .NET programming, C# is #1.";   
    string str2 = string.Copy(str1);  
    string str3 = "C# strings are powerful.";   
    string strUp, strLow; 
    int result, idx;  
  
    Console.WriteLine("str1: " + str1)
 
    Console.WriteLine("Length of str1: " +   
                       str1.Length);   
   
    // create upper- and lowercase versions of str1  
    strLow = str1.ToLower()
    strUp =  str1.ToUpper()
    Console.WriteLine("Lowercase version of str1:\n    " 
                      strLow)
    Console.WriteLine("Uppercase version of str1:\n    " 
                      strUp)
 
    Console.WriteLine();   
 
    // display str1, one char at a time.  
    Console.WriteLine("Display str1, one char at a time.")
    for(int i=0; i < str1.Length; i++)  
      Console.Write(str1[i]);   
    Console.WriteLine("\n");   
 
    // compare strings 
    if(str1 == str2)   
      Console.WriteLine("str1 == str2");   
    else   
      Console.WriteLine("str1 != str2");   
   
    if(str1 == str3)   
      Console.WriteLine("str1 == str3");   
    else   
      Console.WriteLine("str1 != str3");   
  
    result = str1.CompareTo(str3);  
    if(result == 0)  
      Console.WriteLine("str1 and str3 are equal");  
    else if(result < 0)  
      Console.WriteLine("str1 is less than str3");  
    else  
      Console.WriteLine("str1 is greater than str3");  
  
    Console.WriteLine();   
 
    // assign a new string to str2  
    str2 = "One Two Three One";  
  
    // search string 
    idx = str2.IndexOf("One");  
    Console.WriteLine("Index of first occurrence of One: " + idx);  
    idx = str2.LastIndexOf("One");  
    Console.WriteLine("Index of last occurrence of One: " + idx);  
      
  }   
}

           
         
    
  














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