格式化具有给定小数位数的数字 [英] Formatting numbers with a given number of decimal places

问题描述

请告诉我，请给我以下问题的解决方案。我需要在星期一提交。


写一个名为format的全局函数，它使用给定的小数位数格式化数字。该函数接受double类型的强制性第一个参数（要格式化的数字）和第二个类型为integer的可选参数（小数位数），并返回包含格式化文本的字符串对象。如果缺少第二个参数，则格式应假定为两（2）个小数位。此功能不允许使用用户交互代码。

将下面显示的主函数写为函数测试。

展开 | 选择 | Wrap | 行号

解决方案

请取悦，请给我以下问题的解决方案。我需要在星期一提交。


写一个名为format的全局函数，它使用给定的小数位数格式化数字。该函数接受double类型的强制性第一个参数（要格式化的数字）和第二个类型为integer的可选参数（小数位数），并返回包含格式化文本的字符串对象。如果缺少第二个参数，则格式应假定为两（2）个小数位。此功能不允许使用用户交互代码。

将下面显示的主函数写为函数测试。

展开 | 选择 | Wrap | 行号

我写了全局函数，但我试图编译它，程序给出了错误，完整的程序代码是如下：

展开 | 选择 | 换行 | 行号

您是用C或C ++编写的吗？

Can somone please, please give me the solution for the following problem. I need to submit it on Monday.

Write a global function called format, which formats numbers with a given number of decimal places. The function accepts a compulsory first argument of type double (the number to be formatted) and a second optional argument of type integer (the number of decimal places) and returns a string object containing the formatted text. If the second argument is missing, the formatting should assume two (2) decimal places. No user-interaction code is allowed in this function.
Write the main function shown below as a test for your function.

Expand|Select|Wrap|Line Numbers

解决方案

Can somone please, please give me the solution for the following problem. I need to submit it on Monday.

Write a global function called format, which formats numbers with a given number of decimal places. The function accepts a compulsory first argument of type double (the number to be formatted) and a second optional argument of type integer (the number of decimal places) and returns a string object containing the formatted text. If the second argument is missing, the formatting should assume two (2) decimal places. No user-interaction code is allowed in this function.
Write the main function shown below as a test for your function.

Expand|Select|Wrap|Line Numbers

I wrote the global function but I tried to compile it the program is giving errors and the full program code is as follows:

Expand|Select|Wrap|Line Numbers

Are you writing this in C or C++?

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