#include <stdio.h>
#include <stdlib.h>

int main(int argc, const char *argv[])
{
  // You declare a array by simply putting [<amount>] behind your variable.
  int Numbers[5];

  // In c the first element in the array has the index 0.
  // So to access the last one you have to subtract one from the element count.
  // TODO: use the []-operator to fill out the rest of the array with the numbers 1 - 5
  Numbers[0] = 1;

  // TODO: now use the Numbers from the array and square them. After that write them back into the array.

  // If you want to calculate the element count of a array
  // you can use this line of code:
  int count = sizeof(Numbers)/sizeof(Numbers[0]);
  // Printing the array
  for(int i = 0; i < count; i++)
    {
      printf("%d ", Numbers[i]);
    }

  // you can also have multidimensional arrays.
  // you simply add more []
  // Example: int 3D_Matrix[10][10][10];
}