Which header file is ostringstream in?

ostringstream is in the header file. ostringstream is a class defined in the header file. It is an output stream. You can use it to insert data like cout, but the output result will not be displayed in the terminal, but will be saved in a string object. .

ostringstream is in the header file.

is a header file in the C standard library, which provides support for string streams. Strings can be created, manipulated, and formatted in memory by using the classes and functions in the header file. ostringstream is a class defined in the header file. It is an output stream. You can use it to insert data like cout, but the output result will not be displayed in the terminal, but will be saved in a string object. .

The following are the main classes and functions included in the header file:

std::stringstream: This is a class that implements string stream function. It provides the cout-like operator << to insert data, and the str() method to obtain the generated string.

std::istringstream: This is a class that implements the function of a string input stream. It provides the cin-like operator >> to extract data and the str() method to get the input string.

std::ostringstream: This is a class that implements the function of a string output stream. It provides an operator << similar to cout to insert data, but the output result is saved in a string object.

std::getline(): This function can read a line of data from the input stream and store it in a string. It is similar to the std::getline() function, but for string streams.

std::stringstreambuf: This is a class, which is the underlying implementation of string stream. It provides access to and manipulation of underlying data buffers.

ostringstream is defined in the header file. This header file provides the implementation of string stream and related classes and functions. When using ostringstream, you need to include this header file.

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