你可以做这样的(而忽略文章):
#include <iomanip>
#include <iostream>
#include <sstream>
int main() {
// Environment
std::cout << "Global Locale: " << std::locale().name() << std::endl;
std::cout << "System Locale: " << std::locale("").name() << std::endl;
// Set the global locale (To ensure it is English in this example,
// it is not "")
std::locale::global(std::locale("en_GB.utf8"));
std::cout << "Global Locale: " << std::locale().name() << std::endl;
// Conversion string to double
std::istringstream s("108,457,000.89");
double d = 0;
s >> d;
// Conversion double to string
std::cout << std::fixed << d << std::endl;
// This stream (initialized before main) has the "C" locale,
// set it to the current global:
std::locale c = std::cout.imbue(std::locale());
std::cout << "Locale changed from " << c.name()
<< " to " << std::cout.getloc().name() << std::endl;
std::cout << std::fixed << d << std::endl;
return 0;
}
注:在终端/主机
- 运行它(我的开发环境Eclipse拥有的 C语言环境)
- 您可能必须调整 “en_GB.utf8”
结果:
Global Locale: C
System Locale: en_US.UTF-8
Global Locale: en_GB.utf8
108457000.890000
Locale changed from C to en_GB.utf8
108,457,000.890000
一个警告:
Libraries may rely on the global local being the "C" local.
在*双*存储这些类型的数字几乎是从来不是一个错误。货币值应该存储在使用base-10编码的数据类型中,如C#的System.Decimal。在C++标准中不支持,你需要去购物。否则,在使用COleCurrency类的MSVC++中支持,请注意ParseCurrency()方法。 –
感谢您的评论,但这真的没有帮助我用它来解析234,098.6700,它把它当作234.0000,它不能理解数字分组符号。我发现这篇文章也http://www.codeproject.com/Articles/9600/Windows-SetThreadLocale-and-CRT-setlocale直到现在我没有读到它,如果我发现任何解决方案,我会在这里提到它 – ahmedsafan86