An Output Statement
std::cout << "Welcome to C++!\n"; // display message
instructs the computer to perform an action—namely, to print the characters contained between the double quotation marks. Together, the quotation marks and the characters between them are called a string, a character string or a string literal. In this book, we refer to characters between double quotation marks simply as strings. Whitespace characters in strings are not ignored by the compiler.
The entire line 8, including
std::cout, the << operator, the string
"Welcome to C++!\n" and the semicolon (;), is called a statement. Most C++ statements end with a semicolon, also known as the statement terminator (we’ll see some exceptions to this soon). Preprocessing directives ...