c++ default array value not null

When an array is declared in C++, each element of the array is initialized with a default value. The default value depends on the type of the array. Here are the default values for some common types:

  • int: 0
  • float: 0.0
  • char: '\0'
  • bool: false
  • pointer: nullptr

Let's go through the steps of declaring and initializing an array in C++:

  1. Declare the array: To declare an array, you need to specify the type of the elements and the size of the array. For example, to declare an array of integers with 5 elements, you would write:
int myArray[5];
  1. Initialize the array: By default, each element of the array will be initialized with the default value of the type. In the case of integers, each element will be set to 0. If you want to specify initial values for the elements, you can use an initializer list. For example, to initialize the array with the values 1, 2, 3, 4, and 5, you would write:
int myArray[5] = {1, 2, 3, 4, 5};
  1. Accessing array elements: You can access individual elements of the array using the array index. The index starts from 0 for the first element and goes up to the size of the array minus 1. For example, to access the third element of the array, you would write:
int thirdElement = myArray[2];

In this case, thirdElement will have the value 3.

That's it! You now have a basic understanding of how to declare and initialize an array in C++. Let me know if you have any further questions.