string overloaded equality and relational operators : string compare « string « C++ Tutorial

Home
C++ Tutorial
1.Language Basics
2.Data Types
3.Operators statements
4.Array
5.Development
6.Exceptions
7.Function
8.Structure
9.Class
10.Operator Overloading
11.Pointer
12.File Stream
13.template
14.STL Introduction
15.string
16.vector
17.list
18.bitset
19.set multiset
20.valarray
21.queue stack
22.deque
23.map multimap
24.STL Algorithms Modifying sequence operations
25.STL Algorithms Non modifying sequence operations
26.STL Algorithms Binary search
27.STL Algorithms Sorting
28.STL Algorithms Merge
29.STL Algorithms Min Max
30.STL Algorithms Iterator
31.STL Algorithms Heap
32.STL Algorithms Helper
C / ANSI-C
C Tutorial
C++
Visual C++ .NET
C++ Tutorial » string » string compare 
15.7.2.string overloaded equality and relational operators
#include <iostream>
using std::cout;
using std::endl;

#include <string>
using std::string;

int main()
{
   string s1"AA" );
   string s2" AAB" );
   string s3;

   // 
   cout << "s1 is \"" << s1 << "\"; s2 is \"" << s2
      << "\"; s3 is \"" << s3 << '\"' 
      << "\n\nThe results of comparing s2 and s1:"
      << "\ns2 == s1 yields " << s2 == s1 ? "true" "false" )
      << "\ns2 != s1 yields " << s2 != s1 ? "true" "false" )
      << "\ns2 >  s1 yields " << s2 > s1 ? "true" "false" 
      << "\ns2 <  s1 yields " << s2 < s1 ? "true" "false" )
      << "\ns2 >= s1 yields " << s2 >= s1 ? "true" "false" )
      << "\ns2 <= s1 yields " << s2 <= s1 ? "true" "false" );
   return 0;
}
s1 is "AA"; s2 is " AAB"; s3 is ""

The results of comparing s2 and s1:
s2 == s1 yields false
s2 != s1 yields true
s2 >  s1 yields false
s2 <  s1 yields true
s2 >= s1 yields false
s2 <= s1 yields true
15.7.string compare
15.7.1.String: equals
15.7.2.string overloaded equality and relational operators
15.7.3.Compare string ignoring the case
15.7.4.Compare sub string: string4.compare( 0, string2.length(), string2 )
15.7.5.Use == > and < to compare strings
15.7.6.Use string.compare to compare two strings
15.7.7.Compare strings by index: string1.compare( 2, 5, string3, 0, 5)
15.7.8.Set with functor for string comparison
15.7.9.Case-Sensitive Substring Comparison: equivalent of strncmp()
15.7.10.Case-Sensitive Substring Comparison: generalization of strncmp()
15.7.11.Case-Sensitive String Comparisons
15.7.12.Use std::lexicographical_compare to compare two char arrays
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.