C++ 算法 中的 find_if函数

template <class InputIterator, class UnaryPredicate>
InputIterator find_if (InputIterator first, InputIterator last, UnaryPredicate pred);

#include<iostream>
#include<algorithm>
#include<vector>
using namespace std;
bool isAnOdd(int i)
{   
	return((i%2)==1);
}
int main()
{
	std::vector<int> newvector;
	newvector.push_back(20);
	newvector.push_back(35);
	newvector.push_back(50);
	newvector.push_back(65);
	std::vector<int>::iterator ti = std::find_if(newvector.begin(), newvector.end(),isAnOdd);
	std::cout<<"Out of the given elements, first odd element is "<<*ti<<"\n";
	return 0;
}

#include<iostream>
#include<algorithm>
#include<vector>
bool isEven (int i)
{
	return((i%2)==0);
}
int main()
{
	std::vector<int> newvector {20, 35, 50, 65};
	std::vector<int>::iterator ti;
	ti= std::find_if(newvector.begin(),newvector.end(),isEven);
	std::cout<<"Out of the given elements, first even element is "<<*ti<<"\n";
	return 0;

}