Mega Code Archive
Use a unary function object to determine evenodd
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#include <iostream>
#include <vector>
#include <algorithm>
#include <functional>
using namespace std;
class isEven: public unary_function<int, bool> {
public:
result_type operator()(argument_type i)
{
return (result_type) !(i%2);
}
};
int main()
{
vector<int> vectorObject;
int i;
for(i = 1; i < 20; i++)
vectorObject.push_back(i);
cout << "Sequence:";
for(i = 0; i <vectorObject.size(); i++)
cout << vectorObject[ i ] << " ";
cout << endl;
i = count_if(vectorObject.begin(), vectorObject.end(), isEven());
cout << i << " numbers are evenly divisible by 2.";
return 0;
}
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