C++ Program to Demonstrate using Multiplies Function Object

#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('0') << a[i] << "  *  "
             << setw(2) << setfill('0') << b[i] << "  =  "
             << setw(2) << setfill('0') << 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 << "Multiplication using \'multiplies\' arithmetic function object"
         << endl;
    transform(a.begin(), a.end(), b.begin(), c.begin(), multiplies <int>());
    print(a, b, c);
}

Output:
Multiplication using 'multiplies' arithmetic function object
a[i]   b[i]   c[i]
01  *  01  =  01
02  *  02  =  04
03  *  03  =  09
04  *  04  =  16
05  *  01  =  05
01  *  02  =  02
02  *  03  =  06
03  *  04  =  12
04  *  01  =  04
05  *  02  =  10