Can you use string in header files C++?

Can you use string in header files C++?

2 Answers. Put it in the header file, and prefix your usage of string with the namespace std . Header: #include class engineer { std::string company; };

How do you add a string to a header in C++?

In order to use the string data type, the C++ string header must be included at the top of the program. Also, you’ll need to include using namespace std; to make the short name string visible instead of requiring the cumbersome std::string.

What should be in a C++ header file?

Usually you should be using fully qualified names in a header file, such as “std::ostream.” file for the module. Put structure and class declarations, function prototypes, and global variable extern declarations, in the . h file; put the function definitions and global variable definitions and initializations in the .

How do you declare a string in C++?

To use string functions in C++ we need to add a library named in our code at the top, which gives you string functions. It must be included with the header file #include . As we know there are many behaviors that string object understands and several operations we can perform on the string object.

Why we use #include string in C++?

A C-style string, we say. #include guarantees that you may use certain facilities (often types and functions). If you omit it, and use those facilities anyway, it may build or not; it might even build but behave strangely.

Is it necessary to include string in C++?

In short: yes, it is necessary.

Is string object in C++?

Declaring C++ Strings A C++ string is an object of the class string , which is defined in the header file and which is in the standard namespace. The string class has several constructors that may be called (explicitly or implicitly) to create a string object.

Why we use include string in C++?

What should be in a header file?

Header files ( . h ) are designed to provide the information that will be needed in multiple files. Things like class declarations, function prototypes, and enumerations typically go in header files. In a word, “definitions”.

What is header file in C++ with example?

In C language, header files contain the set of predefined standard library functions. Your request to use a header file in your program by including it with the C preprocessing directive “#include”. All the header file have a ‘. h’ an extension. By including a header file, we can use its contents in our program.

Which header file is used for string?

string.h
h is the header file required for string functions.