Hello World
Write, compile, and execute your first C++ program!
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Key Concepts
Review core concepts you need to learn to master this subject
C++ cout
C++ cout
cout is used to display the output to the standard output. It is followed by the symbols <<, which is then followed by the value to display to the standard output.
C++ Strings
C++ Strings
The escape sequence \n (the backslash character followed by letter n) will generate a newline, in a C++ string.
Terminating statements in C++
Terminating statements in C++
In C++, the semicolon ; is used to terminate a statement. Every statement in C++ must be ended with a semicolon (;), and failing to do so will result in errors thrown by the compiler.
Case sensitivity in C++
Case sensitivity in C++
C++ is case sensitive for language keywords and variable names.
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"There are only two kinds of languages: the ones people complain about and the ones nobody uses." C++ is a programming language created by Bjarne Stroustrup and his team at Bell Laboratori...
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Take a look at the hello.cpp file in the middle of the screen. It's a C++ program! In our text editor, you can find the file name at the top: C++ "programs" are stored in files which usual...
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High five! We just got your first C++ program to run! C++, like most programming languages, runs line by line, from top to bottom. Here is the structure of a C++ program: In between the curl...
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We learned how to output on a line with the following code: [...] It will output: [...] We can also output multiple lines by stacking one [...] statement over another: [...] This will...
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Woohoo! You have written your first C++ programs! --> In this lesson, you have learned: - C++ is a general purpose coding language. - C++ runs line by line, from top to bottom. - [...] is h...
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C++ is a compiled language. That means that to get a C++ program to run, you must first translate it from the human-readable form to something a machine can "understand." That translation is done b...
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Compile: A computer can only understand machine code. A compiler can translate the C++ programs that we write into machine code. To compile a file, you need to type [...] and the file name ...
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Compile: Sometimes when we compile, we want to give the output executable file a specific name. To do so, the compile command is slightly different. We still need to write [...] and the file ...
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Programming is often highly collaborative. In addition, our own code can quickly become difficult to understand when we return to it — sometimes only a few hours later! For these reasons, it's ofte...
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Congratulations! In this lesson, you have learned: - Compilation and execution using the terminal. [...] [...] - Single line comment can be done using [...] . - Multi-line comment can be ...
What you'll create
Portfolio projects that showcase your new skills
How you'll master it
Stress-test your knowledge with quizzes that help commit syntax to memory
Hello World
Start