OutputIterator adjacent_difference (InputIterator first,

                                    InputIterator last,

                                    OutputIterator result,

                                    BinaryOperation binary_op);

​

Parameters :

​

first, last, result are same as above.

​

binary_op

Binary operation taking as arguments two elements of the type

pointed by InputIterator, and returning the result of the

replacement for the difference operation.

This can either be a function pointer or a function object. 

​

Return Type :

An iterator pointing to past the last element of the destination

sequence where resulting elements have been stored.

// CPP program to illustrate

// std :: adjacent_difference

#include <iostream> // std::cout

#include <numeric> // std::adjacent_difference

// Driver code

int main()

{

    int val[] = { 1, 2, 3, 5, 9, 11, 12 };

    int n = sizeof(val) / sizeof(val[0]);

    int result[7];

    // Array contains

    std::cout << "Array contains :";

    for (int i = 0; i < n; i++)

        std::cout << " " << val[i];

    std::cout << "\n";

    // Using default std :: adjacent_difference

    std::adjacent_difference(val, val + 7, result);

    std::cout << "Using default adjacent_difference: ";

    for (int i = 1; i < n; i++)

        std::cout << result[i] << ' ';

    std::cout << '\n';

    return 0;

}