How do I pass arrays to functions in C?

How do I pass arrays to functions in C?

In C, you can pass an array to a function by passing the array's name. This gives the function access to the array's elements.

Can you show me an example of that?

Sure! Here's a simple example:

#include <stdio.h>

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

int main() {
    int myArray[] = {1, 2, 3, 4, 5};
    printArray(myArray, 5);
    return 0;
}

This code defines a function printArray that takes an array and its size as parameters.

What happens if I don't pass the size of the array?

If you don't pass the size, the function won't know how many elements to process, which can lead to undefined behavior or accessing out-of-bounds memory.

Is there a way to pass a multidimensional array?

Yes, you can pass a multidimensional array by specifying the dimensions in the function parameters. For example:

void print2DArray(int arr[][3], int rows) {
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < 3; j++) {
            printf("%d ", arr[i][j]);
        }
        printf("\n");
    }
}