Chapter 8.7, Problem 8.12CP

Program Plan Intro

Partial initialization of an array:

The C++ program allows the user to initialize the elements of an array while creating the array; the initialization list stores the value in an array in the specific order as they are initialized.

• Additionally, while initializing the array it is no need to initialize all the elements of an array; the uninitialized elements of the array will be set to “0” by default.
  • For the “string” array, it stores the empty strings for uninitialized elements.
• If a local array is completely uninitialized, then the elements are stored with the garbage values.

For example:

Consider the following snippet,

// Constant for the array size

const int num_of_days = 6;

// Initialization list

int days[num_of_days] = {1, 2, 3};

In the above example, the sequence of values stored inside the braces and separated with commas is referred as the initialization list.

• The values are stored in the array in below format:

days[0]  = 1;

days[1]  = 2;

days[2]  = 3;

days[3]  = 0;

days[4]  = 0;

days[5]  = 0;

Thus, if an array is partially initialized, then the uninitialized elements will be assigned as “0”.