C++ Arrays: C++ Array to Function

Syntax

void functionName(dataType arrayName[], int arraySize);

Example

#include <iostream>
using namespace std;

void printArray(int arr[], int size);

int main() {
    int myArr[5] = {3, 1, 4, 1, 5};
    int arrSize = 5;

    printArray(myArr, arrSize);

    return 0;
}

void printArray(int arr[], int size) {
    for (int i = 0; i < size; i++) {
        cout << arr[i] << " ";
    }
}

Output

3 1 4 1 5```

## Explanation

In this example, we have defined an integer array `myArr` with 5 elements. We have also defined a variable `arrSize` to hold the size of the array.

We then call the `printArray()` function and pass in the `myArr` array and `arrSize` as arguments.

The `printArray()` function iterates through each element of the array using a for loop and prints it out to the console.

## Use

Passing arrays as arguments to functions is a common use case in C++. This allows you to reuse a function for different arrays without having to write a separate function for each one.

## Important Points

- Arrays are always passed to functions using pointers.
- The size of the array must be passed to the function as a separate argument.
- When passing arrays to functions, the original array is not modified unless you explicitly write code to do so.

## Summary

In this tutorial, we learned how to pass arrays as arguments to functions in C++. We also reviewed the syntax, example, output, explanation, use, important points, and summary of C++ Array to Function.