How do I use dynamic arrays in C programming?

How do I use dynamic arrays in C programming?

Dynamic arrays in C allow you to allocate memory at runtime. You can use malloc or calloc to create them.

Can you show me an example of creating a dynamic array?

Sure! Here's a simple example:

int *arr;
int n;

printf("Enter the number of elements: ");
scanf("%d", &n);

arr = (int*)malloc(n * sizeof(int));
if (arr == NULL) {
    printf("Memory allocation failed!");
    return 1;
}

This code allocates memory for n integers.

How do I free the memory allocated for the dynamic array?

You can free the memory using the free function. For example:

free(arr);

This will release the memory back to the system.

What happens if I forget to free the memory?

Forgetting to free memory can lead to memory leaks, which may cause your program to consume more memory over time and potentially crash.