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// Demonstrating string
comparison capabilities.
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#include <iostream>
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using std::cout;
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using std::endl;
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#include <string>
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using std::string;
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int main()
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{
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string string1( "Testing the comparison
functions." );
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string string2( "Hello" );
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string string3( "stinger" );
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string string4( string2 );
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cout << "string1: " <<
string1 << "\nstring2: " << string2
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<< "\nstring3: " <<
string3 << "\nstring4:" << string4 <<
"\n\n";
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// comparing string1 and string4
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if ( string1 == string4 )
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cout << "string1 ==
string4\n";
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else // string1 != string4
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{
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if ( string1 > string4 )
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cout << "string1 >
string4\n";
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else // string1 < string4
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cout << "string1 <
string4\n";
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} // end else
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// comparing string1 and string2
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int result = string1.compare( string2 );
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if ( result == 0 )
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cout << "string1.compare(
string2 ) == 0\n";
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else // result != 0
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{
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if ( result > 0 )
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cout << "string1.compare(
string2 ) > 0\n";
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else // result < 0
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cout << "string1.compare(
string2 ) < 0\n";
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} // end else
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// comparing string1 (elements 2-5) and
string3 (elements 0-5)
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result = string1.compare( 2, 5, string3, 0,
5 );
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if ( result == 0 )
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cout << "string1.compare( 2,
5, string3, 0, 5 ) == 0\n";
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else // result != 0
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{
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if ( result > 0 )
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cout << "string1.compare(
2, 5, string3, 0, 5 ) > 0\n";
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else // result < 0
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cout << "string1.compare(
2, 5, string3, 0, 5 ) < 0\n";
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} // end else
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// comparing string2 and string4
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result = string4.compare( 0,
string2.length(), string2 );
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if ( result == 0 )
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cout << "string4.compare( 0,
string2.length(), "
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<< "string2 ) == 0"
<< endl;
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else // result != 0
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{
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if ( result > 0 )
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cout << "string4.compare( 0,
string2.length(), "
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<< "string2 ) >
0" << endl;
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else // result < 0
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cout << "string4.compare(
0, string2.length(), "
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<< "string2 ) <
0" << endl;
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} // end else
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// comparing string2 and string4
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result = string2.compare( 0, 3, string4 );
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if ( result == 0 )
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cout << "string2.compare( 0,
3, string4 ) == 0" << endl;
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else // result != 0
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{
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if ( result > 0 )
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cout << "string2.compare(
0, 3, string4 ) > 0" << endl;
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else // result < 0
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cout << "string2.compare(
0, 3, string4 ) < 0" << endl;
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} // end else
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return 0;
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} // end main
|
string1:
Testing the comparison functions.
string2:
Hello
string3:
stinger
string4:
Hello
string1>
string4
string1.compare(
string2 ) > 0
string1.compare(
2, 5, string3, 0, 5 ) == 0
string4.compare(
0, string2.length(), string2 ) == 0
string2.compare(
0, 3, string4 ) < 0
string1.compare(
string2 ) >0
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