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C++

Operators​

  • << will pass the contents on the right hand side to the left hand side, for example; std::cout << "Text" passes the string Text into the function std::cout.

Debugging​

  • Sometimes the compiler will point you to the line after the line that is actually failing. Usually if the error is to do with a missing semi-colon.

Values​

  • Literals: Can't be modified on their own.
    • Numbers 5 or -6.7
    • Characters, must use single quotes 'H'
    • Text, must use double quotes "Hello"

Memory​

  • Direct memory access is discouraged.
  • Instead we want to access memory indirectly through an object.

Random Access Memory (RAM)​

When we run a program, the OS loads it into RAM. Think of RAM as a series of numbered boxes that can be used to store data while the program is running.

Comments​

  • // single line comment
  • /* ... */ multi-line comment (cannot be nested)

Quizzes​

Section 1​

1.1​
  1. What is a Statement? A statement is an instruction in a program telling the computer to perform an action.
  2. What is a function? A function is a collection of statements that execute sequentially, designed to complete a specific task.
  3. What is the name of the function that all programs must have? main()
  4. What happens when the program is run? The statements inside main() are executed sequentially.
  5. What symbol are statements in C++ often ended with? ;
  6. What is a syntax error? An issue with your code not conforming to the grammar rules of C++.
  7. What is the C++ Standard Library? A collection of precompiled code that has been packaged and ships with C++ for reuse in other programs.
1.3​
  1. What is data? Data is information or values that can be stored, moved and processed by a computer.
  2. What is a value? Is a literal or instance of some other useful concept that can be represented as data.
  3. What is an object? An object is a region of storage that can store a value.
  4. What is a variable? A variable is a named object that holds a value.
  5. What is an identifier? Is the name that a variable is accessed by.
  6. What is a data type used for? A data type determines what kind of value the object will store.
  7. What is an integer? An integer is a whole number (no fractional component).