c ++ integer

c ++ integer-> std :: string转换。(c++ integer->std::string conversion. Simple function?)

问题：我有一个整数; 该整数需要转换为stl :: string类型。

在过去，我已经使用stringstream进行转换，这只是一种麻烦。 我知道C的方式是做一个sprintf ，但是我宁愿做一个类型安全的（C ++）方法。

有更好的方法吗？

以下是我过去使用的stringstream方法：

std::string intToString(int i) { std::stringstream ss; std::string s; ss << i; s = ss.str(); return s; }

当然，这可以改写为：

template<class T> std::string t_to_string(T i) { std::stringstream ss; std::string s; ss << i; s = ss.str(); return s; }

不过，我认为这是一个相当“重的”实施。

赞颂指出，调用是相当不错的，但是：

std::string s = t_to_string(my_integer);

无论如何，更好的方式将是...很好。

有关：

替代itoa（）将整数转换为字符串C ++？

Problem: I have an integer; this integer needs to be converted to a stl::string type.

In the past, I've used stringstream to do a conversion, and that's just kind of cumbersome. I know the C way is to do a sprintf, but I'd much rather do a C++ method that is typesafe(er).

Is there a better way to do this?

Here is the stringstream approach I have used in the past:

std::string intToString(int i) { std::stringstream ss; std::string s; ss << i; s = ss.str(); return s; }

Of course, this could be rewritten as so:

template<class T> std::string t_to_string(T i) { std::stringstream ss; std::string s; ss << i; s = ss.str(); return s; }

However, I have the notion that this is a fairly 'heavy-weight' implementation.

Zan noted that the invocation is pretty nice, however:

std::string s = t_to_string(my_integer);

At any rate, a nicer way would be... nice.

Related:

Alternative to itoa() for converting integer to string C++?

最满意答案

现在在c ++ 11我们有

#include <string> string s = std::to_string(123);

链接到参考： http : //en.cppreference.com/w/cpp/string/basic_string/to_string

Now in c++11 we have

#include <string> string s = std::to_string(123);

Link to reference: http://en.cppreference.com/w/cpp/string/basic_string/to_string