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#include<vector>

using namespace std;

int main() {

vector<int> v;

v.push_back(1);

vector<int>::iterator ite;

ite = v.begin();

// #2 ite1的类型太长 使用auto可以被自动推导

auto ite1 = v.end();

// # 3错误

// auto ite2;

// ite2 = v.end();

}