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”.
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Starting Out With C++: Early Objects (10th Edition)
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