#include <map>

 1 #include <iostream>
 2 #include <map>
 3 using namespace std;
 4 
 5 void main()
 6 {
 7     int int1(10);
 8     double double1(99.8);
 9     char ch1(‘a‘);
10     char *str = "hellochina";
11 
12     //tuple必须是静态数组
13     //配合array，vector使用
14     tuple<int, double, char, const char *>mytuple(int1, double1, ch1, str);
15     
16     auto data0 = get<0>(mytuple);//下标只能是常量
17     auto data1 = get<1>(mytuple);
18     auto data2 = get<2>(mytuple);
19     auto data3 = get<3>(mytuple);
20 
21     cout << typeid(data0).name() << " " << data0 << endl;//打印数据类型
22     cout << typeid(data1).name() << " " << data1 << endl;
23     cout << typeid(data2).name() << " " << data2 << endl;
24     cout << typeid(data3).name() << " " << data3 << endl;
25 
26     decltype(data0) dataA;//获取数据类型再次创建
27 
28     system("pause");
29 }