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;
}

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