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#include <algorithm>
#include <iterator>
#include <iostream>
#include <string>
#include <cstring>
using namespace std;
class CaseString
{
public:
bool operator()(string const &first,
string const &second) const
{
return strcasecmp(first.c_str(), second.c_str()) < 0;
}
};
int main()
{
string word1 = "hello";
string word2 = "help";
cout << word1 << " is " <<
(
lexicographical_compare(word1.begin(), word1.end(),
word2.begin(), word2.end()) ?
"before "
:
"beyond or at "
) <<
word2 << " in the alphabet\n";
cout << word1 << " is " <<
(
lexicographical_compare(word1.begin(), word1.end(),
word1.begin(), word1.end()) ?
"before "
:
"beyond or at "
) <<
word1 << " in the alphabet\n";
cout << word2 << " is " <<
(
lexicographical_compare(word2.begin(), word2.end(),
word1.begin(), word1.end()) ?
"before "
:
"beyond or at "
) <<
word1 << " in the alphabet\n";
string one[] = {"alpha", "bravo", "charley"};
string two[] = {"ALPHA", "BRAVO", "DELTA"};
copy(one, one + 3, ostream_iterator<string>(cout, " "));
cout << " is ordered " <<
(
lexicographical_compare(one, one + 3,
two, two + 3, CaseString()) ?
"before "
:
"beyond or at "
);
copy(two, two + 3, ostream_iterator<string>(cout, " "));
cout << "\n"
"using case-insensitive comparisons.\n";
}
/*
Displays:
hello is before help in the alphabet
hello is beyond or at hello in the alphabet
help is beyond or at hello in the alphabet
alpha bravo charley is ordered before ALPHA BRAVO DELTA
using case-insensitive comparisons.
*/
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