By Ray Lischner (auth.)
Exploring C++ makes use of a chain of self–directed classes to divide C++ into bite–sized chunks that you should digest as swiftly as you could swallow them. The publication assumes just a uncomplicated realizing of primary programming options (variables, services, expressions, statements) and calls for no past wisdom of C or the other specific language. It reduces the often massive complexity of C++.
The integrated classes let you examine by way of doing, as a player of an interactive schooling consultation. you will grasp every one step in a single sitting earlier than you continue to the subsequent. writer Ray Lischner has designed inquiries to advertise studying new fabric. And via responding to questions through the textual content, you will be engaged each step of the way.
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Additional resources for Exploring C++: The Programmer’s Introduction to C++
Example text
Start by reading Listing 4-1. Listing 4-1. en_haXp;Xj 7 y Predict the output from the program in Listing 4-1. You may already know what Xp means. If so, this prediction is easy to make. If you don’t know, take a guess. _________________________________________________________________________________ Now check your answer. Were you correct? So what does Xp mean? _________________________________________________________________________________ Inside a string, the backslash (X) is a special, even magical, character.
Given that the output operator is 88, what do you expect the input operator to be? ________________ That didn’t take a rocket scientist to deduce, did it? The input operator is ::, the opposite direction of the output operator. Think of the operators as arrows pointing in the direction that information flows: from the stream to variables for input, or from variables to the stream for output. The standard library declares input operators in the 8eopna]i: header. Listing 5-1 shows a simple program that performs input and output.
How you invoke the program depends on the operating system. In a GUI environment, you will need a console or terminal window where you can type a command line. You may need to type the complete path to the executable file, or just the program name—again, this depends on your operating system. When you run the program, it reads numbers from the standard input stream, which means whatever you type, the program reads. You then need to notify the program you are done by pressing the magic keystrokes that signal end-of-file.