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Chapter 3: Problem 20

What header file must be included A) to perform mathematical functions like sqrt? B) to use files? C) to use stream manipluators like setprecision?

Short Answer

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a) Performing mathematical functions like sqrt b) Working with files c) Using stream manipulators like setprecision Answer: a) To perform mathematical functions like sqrt, include the `` header file. b) To work with files, include the `` header file. c) To use stream manipulators like setprecision, include the `` header file.

Step by step solution

01

Part A: Header file for mathematical functions

To perform mathematical functions like sqrt, the header file to include is the `` header. In C++ programming, by including the `` header file, you gain access to several mathematical functions which are commonly used for various calculations.
02

Part B: Header file for file handling

To work with files in C++ programming, the header file to include is the `` header. Including the `` header file provides you with the capability to create, read, and write files in a C++ program.
03

Part C: Header file for stream manipulators

To use stream manipulators like setprecision in C++ programming, you need to include the `` header file. The `` header allows you to manipulate the input and output of data in streams, which can be helpful for formatting, alignment, and precision.

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