How to Create Function in C++?
Let's look at the function that we created in the previous chapter:
main.cpp
1234567891011121314151617#include <iostream> // Function to calculate the factorial of an integer int calculateFactorial(int n) { int factorial = 1; for (int i = 1; i <= n; i++) factorial *= i; return factorial; } int main() { // Call the calculateFactorial function and print the result std::cout << calculateFactorial(5) << std::endl; std::cout << calculateFactorial(8) << std::endl; }
-
Function signature: Provides essential information about a function's interface, including its name, return type, and parameter list.
-
Return type: Specifies the type of data the function will return. In this example, it's
int
, indicating an integer will be returned. -
Function name: Unique identifier for the function, used to call it from other parts of the program. Our function is named
calculateFactorial
.
-
-
Parameter list: Defines the input values the function expects. This function expects a single integer parameter named
n
. -
Function Body: Contains the code that performs the desired operations, enclosed in curly braces
{}
. In this example, the function calculates the factorial ofn
using a for loop and stores the result in thefactorial
variable. -
Return Statement: Specifies the value the function will return to the caller. In this case, it returns the calculated factorial value using the
return
keyword.
Thus, above, we described the structure of a function in C++: any function consists of a signature, a function body, and a return value.
Tak for dine kommentarer!
Spørg AI
Spørg AI
Spørg om hvad som helst eller prøv et af de foreslåede spørgsmål for at starte vores chat
Awesome!
Completion rate improved to 5
How to Create Function in C++?
Stryg for at vise menuen
Let's look at the function that we created in the previous chapter:
main.cpp
1234567891011121314151617#include <iostream> // Function to calculate the factorial of an integer int calculateFactorial(int n) { int factorial = 1; for (int i = 1; i <= n; i++) factorial *= i; return factorial; } int main() { // Call the calculateFactorial function and print the result std::cout << calculateFactorial(5) << std::endl; std::cout << calculateFactorial(8) << std::endl; }
-
Function signature: Provides essential information about a function's interface, including its name, return type, and parameter list.
-
Return type: Specifies the type of data the function will return. In this example, it's
int
, indicating an integer will be returned. -
Function name: Unique identifier for the function, used to call it from other parts of the program. Our function is named
calculateFactorial
.
-
-
Parameter list: Defines the input values the function expects. This function expects a single integer parameter named
n
. -
Function Body: Contains the code that performs the desired operations, enclosed in curly braces
{}
. In this example, the function calculates the factorial ofn
using a for loop and stores the result in thefactorial
variable. -
Return Statement: Specifies the value the function will return to the caller. In this case, it returns the calculated factorial value using the
return
keyword.
Thus, above, we described the structure of a function in C++: any function consists of a signature, a function body, and a return value.
Tak for dine kommentarer!