如何从双精度值获取货币格式?以下代码段适用于整数,而不能用于双精度吗?

#include <locale.h>
#include <iostream>
#include <iomanip>
#include <sstream>

using namespace std;

int main(void)
{
    ostringstream stream;
    stream.imbue(std::locale(""));
    stream << setprecision(3) <<194663.33;
    string stringValue = stream.str();
    cout << stringValue;
    return 0;
}

最佳答案

像这样:

#include <iostream>
#include <iomanip>

class punct_facet: public std::numpunct<char>
{
    char do_decimal_point() const { return '.'; }
    char do_thousands_sep() const { return ','; }
    std::string do_grouping() const { return "\03"; }
};
void main()
{
    std::cout.imbue(std::locale(std::cout.getloc(), new punct_facet));
    std::cout << std::fixed << std::setprecision(2);
    std::cout << "Formatted number: " << 194663.33 << std::endl;
}


输出:

Formatted number: 194,663.33


您可以在这里找到更多信息:


http://www.cplusplus.com/reference/locale/numpunct/
How can I set the comma to be a decimal point?
http://www.umich.edu/~eecs381/handouts/formatting.pdf

关于c++ - 使用双值的货币格式,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/22104371/

10-11 01:32