c++11 auto
时间: 2023-08-01 10:10:38 浏览: 55
C++11 introduced the `auto` keyword, which allows for type inference during variable declaration. Instead of explicitly specifying the type of a variable, you can use `auto` and let the compiler deduce the type based on the initializer expression.
Here's an example:
```cpp
auto x = 42; // x is deduced as int
auto str = "Hello, World!"; // str is deduced as const char*
auto result = someFunction(); // result is deduced based on the return type of someFunction()
```
Using `auto` can help reduce verbosity and make code more concise, especially when dealing with complex types or template metaprogramming. However, it's important to note that `auto` does not imply dynamic typing or reflection; it is still statically typed and checked at compile time.
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