C++ Program to Demonstrate using Binary Arithmetic Function Object

This C++ program demonstrates using binary arithmetic function object. Tbe program creates two vectors with integer elements and adds them using ‘plus’ function object which is passed as a parameter to the transform algorithm which adds the corresponding elements and stores the sum in the third vector.

Here is the source code of the C++ program which demonstrates using binary arithmetic function object. The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.

```
/*
```

 * C++ Program to demonstrate using binary arithmetic function objects

```
 */
```
```
#include <iostream>
```
```
#include <algorithm>
```
```
#include <vector>
```
```
#include <functional>
```
```
#include <iterator>
```
```
#include <iomanip>
```
```
using namespace std;
```
```
 
```
```
typedef const vector <int>& vecref;
```
```
 
```

void print(vecref a, vecref b, vecref c)

```
{
```

    cout << "a[i]  b[i]  c[i]" << endl;

```
    for(int i = 0; i < a.size(); i++)
```
```
    {
```

        cout << setw(2) << setfill(' ') << a[i] << "  +  "

             << setw(1) << setfill(' ') << b[i] << "  =  "

             << setw(1) << setfill(' ') << c[i] << endl;

```
    }
```
```
}
```
```
 
```
```
int main()
```
```
{
```
```
    vector <int> a(10), b(10), c(10);
```
```
 
```
```
    for (int i = 0; i < 10 ;i++)
```
```
    {
```
```
        a[i] = (i % 5 + 1);
```
```
        b[i] = (i % 4 + 1);
```
```
    }
```
```
    // Save the result in vector c
```

    cout << "Addition using \'plus\' arithmetic function object"

```
         << endl;
```

    transform(a.begin(), a.end(), b.begin(), c.begin(), plus <int>());

```
    print(a, b, c);
```
```
}
```

$ a.out
Addition using 'plus' arithmetic function object
a[i]  b[i]  c[i]
 1  +  1  =  2
 2  +  2  =  4
 3  +  3  =  6
 4  +  4  =  8
 5  +  1  =  6
 1  +  2  =  3
 2  +  3  =  5
 3  +  4  =  7
 4  +  1  =  5
 5  +  2  =  7