C++ begin()和end()

begin(a)指向数组a的第一个元素，end(a)指向数组a最后一个元素之后的一个元素

#include <iostream>

using namespace std;

int main()
{
	int ia[] = {0,1,2,3};
	int *beg = begin(ia);
	int *last = end(ia);
	cout << *beg << endl;
	cout << *(last-1) << endl;
	return 0;
}

0
3
[Finished in 0.7s]

begin(a)指向数组a的第一个元素，end(a)指向数组a最后一个元素之后的一个元素

#include <iostream>

using namespace std;

int main()
{
	int ia[] = {0,1,2,3};
	int *beg = begin(ia);
	int *last = end(ia);
	cout << *beg << endl;
	cout << *(last-1) << endl;
	return 0;
}

0
3
[Finished in 0.7s]