4.auto详解

Posted 2020-10-27 xiaochi

 1 #include <iostream>
 2 using namespace std;
 3 
 4 template <calss T1,class T2>
 5 auto add(T1 t1, T2 t2)
 6 {
 7     return t1 + t2;
 8 }
 9 
10 //auto自适应数据类型,自动推理
11 void main()
12 {
13     auto num = 10;
14     cout << typeid(num).name() << endl;
15 
16     int a[5] = { 1,3,4,5,6 };
17     
18     for (auto i : a)
19     {
20         cout << i << endl;
21     }
22 
23     cin.get();
24 }