Allocating an Array

You can also use malloc to give you space for more than one value, and then you can treat the pointer like an array.

Note

Pointers are not arrays. The C language lets you treat a pointer like it is an array. In which case, it will use the index to jump forward in memory and access the data as if it were an array.

Example Code

The following code allocates space for an array of doubles, initialises some and then prints all values.

#include <stdlib.h>
#include "splashkit.h"

using std::to_string;

int main()
{
    const int SIZE = 10;

    // Allocate memory for an array of doubles on the heap
    double *ptr = (double *)malloc(SIZE * sizeof(double));

    // Check if memory allocation was successful
    if (ptr == NULL)
    {
        write_line("Memory allocation failed");
        return 1;
    }

    // Assign a value to the allocated memory
    ptr[0] = 73.37; // or *ptr = 73.37;
    ptr[1] = 42.0;
    //...

    // Print the value
    for(int i = 0; i < SIZE; i++)
    {
        write_line("Value at index " + to_string(i) + ": " + to_string(ptr[i]));
    }

    // Free the allocated memory
    free(ptr);
    ptr = NULL;

    return 0;
}