Question

What standard $\mathrm{C}++$ library function returns the length of a string?

   What standard $\mathrm{C}++$ library function returns the length of a string?

C++ for business programming

C++ for business programming

Molluzzo C. John 2nd Edition

Chapter 8, Problem 8

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Step 1: Identify the problem: We need to find a standard C++ library function that returns the length of a string. Show more…

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What standard $\mathrm{C}++$ library function returns the length of a string?

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Key Concepts

C++ Standard Library

The C++ Standard Library is a collection of classes and functions that provide well-tested, standardized tools for common tasks, including input/output, data manipulation, and container management. It offers robust support for handling strings through both the C++ string class and C-style string functions.

std::string

The std::string class is part of the C++ Standard Library and represents a sequence of characters. It comes with built-in member functions such as length() and size() that return the length of the string, offering a convenient way to handle string operations in C++.

C String Functions (std::strlen)

In addition to the std::string class, the C++ Standard Library provides support for C-style strings through functions like std::strlen, which is defined in the <cstring> header. This function returns the length of a null-terminated character array by counting the characters until the terminating null character is encountered.

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