mismatch.cpp

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#include <algorithm>    // mismatch
#include <functional>   // less_equal
#include <iostream>     // cout, endl
#include <utility>      // pair
#include <vector>       // vector
 
#include <examples.h>
 
 
int main ()
{
    typedef std::vector<int, std::allocator<int> > Vector;
    typedef Vector::const_iterator                 Iter;
 
    const Vector::value_type d1[] = { 1, 2, 3, 4 };
    const Vector::value_type d2[] = { 1, 3, 2, 4 };
 
    // Set up two vectors.
    const Vector vi1 (d1 + 0, d1 + sizeof d1 / sizeof *d1);
    const Vector vi2 (d2 + 0, d2 + sizeof d2 / sizeof *d2);
 
    // p1 will contain two iterators that point to the first pair of
    // elements that are different between the two vectors.
    std::pair<Iter, Iter> p1 =
        std::mismatch (vi1.begin (), vi1.end (), vi2.begin ());
 
    // Find the first two elements such that an element in the
    // first vector is greater than the element in the second vector.
    std::pair<Iter, Iter> p2 =
        std::mismatch (vi1.begin (), vi1.end (),
                       vi2.begin (), std::less_equal<int>());
 
    // Output results.
    std::cout << *p1.first << ", " << *p1.second << std::endl;
    std::cout << *p2.first << ", " << *p2.second << std::endl;
 
    return 0;
}