C++ Program to Demonstrate Usage of bind2nd Binder

This C++ program demonstrates the usage of bind2nd binder. The program binds the second parameter of the binary predicate greater and equal_to to 7. A vector of integers is instantiated and whether there is an element greater than 7 and any element equal to 7 is determined.

Here is the source code of the C++ program which demonstrates the usage of bind2nd binder. The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.

```
/*
```

 * C++ program to demonstrate usage of bind2nd binder

```
 */
```
```
#include <iostream>
```
```
#include <algorithm>
```
```
#include <functional>
```
```
#include <vector>
```
```
 
```
```
using std::cout;
```
```
using std::endl;
```
```
 
```

typedef std::vector <int>::const_iterator const_iterator;

```
 
```
```
void print(const std::vector <int>& v)
```
```
{
```
```
    const_iterator i;
```

    for (i = v.begin(); i != v.end(); i++)

```
    {
```
```
        cout << *i << " ";
```
```
    }
```
```
    cout << endl;
```
```
}
```
```
 
```
```
int main()
```
```
{
```
```
    std::vector <int> v(10);
```
```
    const_iterator p;
```
```
 
```
```
    for(int i = 0; i < 10; i++)
```
```
    {
```
```
        v[i] = i % 8;
```
```
    }
```
```
    cout << "Vector : ";
```
```
    print(v);
```

    p = find_if(v.begin(), v.end(), std::bind2nd(std::greater <int>(), 7));

```
    if(p != v.end())
```
```
    {
```

        cout << "Element greater than 7 => " << *p

             << " at position " << p - v.begin() + 1

```
             << endl;
```
```
    }
```
```
    else
```

        cout << "No element greater than 7" << endl;

    p = find_if(v.begin(), v.end(), std::bind2nd(std::equal_to <int>(), 7));

```
    if(p != v.end())
```
```
    {
```

        cout << "Element equal to 7 at position "

             << p - v.begin() + 1 << endl;

```
    }
```
```
    else
```

        cout << "No element equal to 7" << endl;

```
}
```

$ a.out
Vector : 0 1 2 3 4 5 6 7 0 1 
No element greater than 7
Element equal to 7 at position 8

Sanfoundry Global Education & Learning Series – 1000 C++ Programs.

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