c++ 输出文本宽度和对齐问题

To get good alignment of both text and numbers, use the same length for all the text strings, and use the same width for all the numbers.

All the output numbers should have exactly 6 digits after the decimal points.
The width of all the output numbers should be 15.
The output text should be aligned.

请问怎样要如何修改？

没加头文件

#include <iostream>
#include <iomanip>