Podcast
Questions and Answers
What are the building blocks of a C++ program?
What are the building blocks of a C++ program?
What does the function sqrt
do?
What does the function sqrt
do?
The sqrt
function calculates the square root of its input argument.
What is the purpose of the ceil()
function in C++?
What is the purpose of the ceil()
function in C++?
Functions are used to ______ a program.
Functions are used to ______ a program.
Signup and view all the answers
What is the purpose of a function prototype in C++?
What is the purpose of a function prototype in C++?
Signup and view all the answers
Function definitions can be written inside other functions.
Function definitions can be written inside other functions.
Signup and view all the answers
What is the role of the return
keyword in a function definition?
What is the role of the return
keyword in a function definition?
Signup and view all the answers
What is the purpose of a function call?
What is the purpose of a function call?
Signup and view all the answers
What is the purpose of header files in C++?
What is the purpose of header files in C++?
Signup and view all the answers
The rand()
function in C++ generates truly random numbers.
The rand()
function in C++ generates truly random numbers.
Signup and view all the answers
What is an enumeration in C++?
What is an enumeration in C++?
Signup and view all the answers
Enumeration constants can have preset values in C++.
Enumeration constants can have preset values in C++.
Signup and view all the answers
What are the attributes that variables in C++ possess?
What are the attributes that variables in C++ possess?
Signup and view all the answers
What is the purpose of the static
keyword when applied to a local variable in a function?
What is the purpose of the static
keyword when applied to a local variable in a function?
Signup and view all the answers
What is the purpose of the extern
keyword in C++?
What is the purpose of the extern
keyword in C++?
Signup and view all the answers
Which of these is NOT a valid storage class in C++?
Which of these is NOT a valid storage class in C++?
Signup and view all the answers
What is the difference between file scope and function scope in C++?
What is the difference between file scope and function scope in C++?
Signup and view all the answers
A reference cannot be reassigned to a different variable once it is initialized.
A reference cannot be reassigned to a different variable once it is initialized.
Signup and view all the answers
What is the difference between pass-by-value and pass-by-reference in C++ functions?
What is the difference between pass-by-value and pass-by-reference in C++ functions?
Signup and view all the answers
What is a recursive function in C++?
What is a recursive function in C++?
Signup and view all the answers
Recursion is always the most efficient approach to solving problems in programming.
Recursion is always the most efficient approach to solving problems in programming.
Signup and view all the answers
What is the purpose of the inline
keyword in C++?
What is the purpose of the inline
keyword in C++?
Signup and view all the answers
Function overloading allows functions with the same name but different arguments to exist within the same program.
Function overloading allows functions with the same name but different arguments to exist within the same program.
Signup and view all the answers
What is the purpose of function templates in C++?
What is the purpose of function templates in C++?
Signup and view all the answers
What is the purpose of the unary scope resolution operator (::) in C++?
What is the purpose of the unary scope resolution operator (::) in C++?
Signup and view all the answers
Study Notes
Program Components in C++
- Divide and conquer: construct programs from smaller components (modules) for easier management.
- Modules: functions and classes.
- Pre-packaged modules from standard libraries, and programmer-defined functions and classes.
- Functions invoked by function calls, requiring function name and needed information (arguments).
- Function definitions are written once.
- Functions are hidden from other functions.
Math Library Functions
- Used for common mathematical calculations.
- Include the
<cmath>
header file. - Called by writing
functionName (argument)
orfunctionName(argument1, argument2, ...);
- Examples:
cout << sqrt( 900.0 );
(square root) prints 30. - All math library functions return a double.
Function Arguments
- Can be constants (
sqrt(4)
), variables (sqrt(x)
), or expressions (sqrt(sqrt(x))
).
Function Prototypes
- Function prototype contains function name, parameters, and return type.
- Needed if function definition appears after function call.
- Prototype must match function definition.
- Example:
double maximum ( double, double, double );
Header Files
- Contain function prototypes, data types, and constants.
- Typically end with
.h
(e.g.,<cmath>
). - Programmer can create custom header files.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz covers the essential components of C++ programming, focusing on the use of modules, function definitions, and invoking math library functions. Explore the structure of functions, their arguments, and how to properly utilize the <cmath>
library. Test your understanding of these concepts in C++ programming.