STL——容器（List）list 数据的存取
list.front();
//返回第一个元素
list.back();
//返回最后一个元素
1 #include <iostream> 2 #include <list> 3 4 using namespace std; 5 6 int main() 7 { 8 int num[] = { 111,222,333,444,555 }; 9 list<int> listInt(num, num + size(num)); 10 11 int iFront = listInt.front(); 12 int iBack = listInt.back(); 13 14 cout << "iFront的值为：" << iFront << endl; 15 cout << "iBack的值为：" << iBack << endl; 16 17 cout << "修改前遍历 listInt："; 18 for (list<int>::iterator it = listInt.begin(); it != listInt.end(); it++) 19 { 20 cout << *it << " "; 21 } 22 cout << endl; 23 24 listInt.front() = 0; 25 listInt.back() = 666; 26 27 cout << "修改后遍历 listInt："; 28 for (list<int>::iterator it = listInt.begin(); it != listInt.end(); it++) 29 { 30 cout << *it << " "; 31 } 32 cout << endl; 33 34 return 0; 35 }
打印结果：
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