C++货币输出

Question

我现在正在学习 C++ 类(class)，并且已经完成了我的期末作业。然而有一件事困扰着我:

虽然我有针对特定输出的测试的正确输出，basepay 应该是 133.20 并且显示为 133.2。有没有办法让它显示额外的 0 而不是将其关闭？

有人知道这是否可行以及如何实现吗？提前谢谢你

我的代码如下:

cout<< "Base Pay .................. = " << basepay << endl;
cout<< "Hours in Overtime ......... = " << overtime_hours << endl;
cout<< "Overtime Pay Amount........ = " << overtime_extra << endl;
cout<< "Total Pay ................. = " << iIndividualSalary << endl;
cout<< endl;

cout<< "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%" <<endl;
cout<< "%%%% EMPLOYEE SUMMARY DATA%%%%%%%%%%%%%%%%%%%%%%%" <<endl;
cout<< "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%" <<endl;
cout<< "%%%% Total Employee Salaries ..... = " << iTotal_salaries <<endl;
cout<< "%%%% Total Employee Hours ........ = " << iTotal_hours <<endl;
cout<< "%%%% Total Overtime Hours......... = " << iTotal_OvertimeHours <<endl;
cout<< "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%" << endl;
cout<< "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%" << endl;

Answer 1

如果你想用 C++ 的方式来做，并且你可以用 C++11 标志编译，你可以使用标准库:

// Note: the value in cents!
const int basepay = 10000;

// Create a stream and imbue it with the local configuration.
std::stringstream ss;
ss.imbue(std::locale(""));

// The stream contains $100.00 (assuming a en_US locale config)
ss << std::showbase << std::put_money(basepay);

示例 here .

这种方法有什么优势？

• 它使用本地配置，因此输出在任何机器上都是一致的，即使是小数点分隔符、千位分隔符、货币符号和小数点精度(如果需要)也是如此。
• 所有的格式化工作已经由 std 库完成，要做的工作更少!