What values are automatically assigned to the array elements which are not explicitly initialized?

Using nested braces to initialize dimensions and elements in a dimension selectively. In the following example, only the first eight elements of the array grid are explicitly initialized. The remaining four elements that are not explicitly initialized are automatically initialized to zero.

When an array is declared all its elements are automatically initialized to zero?

An array may be partially initialized, by providing fewer data items than the size of the array. The remaining array elements will be automatically initialized to zero. If an array is to be completely initialized, the dimension of the array is not required.

What is the value of an array element which is not initialized in Java?

zero value
Everything in a Java program not explicitly set to something by the programmer, is initialized to a zero value.

What does it mean when Java auto initializes an array?

When there are more elements in the array than values in the initializer list, the computer automatically initializes the remaining or unmatched elements to zero. This behavior suggests a compact notation or “trick” for initializing all array elements values to zero.

What happens when an array is not initialized?

If we use any uninitialized array in C program, compiler will not generate any compilation and execution error i.e. program will compile and execute properly. If the array is uninitialized while declaring and even after the declaration if you do not initialize then, you may get unpredictable result.

What are the default values of array?

What are the default array values in Java?

• Integer − 0.
• Byte − 0.
• Float − 0.0.
• Boolean − false.
• String/Object − null.

How array can be declared and initialized?

We declare an array in Java as we do other variables, by providing a type and name: int[] myArray; To initialize or instantiate an array as we declare it, meaning we assign values as when we create the array, we can use the following shorthand syntax: int[] myArray = {13, 14, 15};

What is the value of an array variable?

A variable array is a group of variables stored under the same name but with different index values. In the array declaration and initialization example below, you can think of the index value as the position of a specific variable in the list.

What is the correct way to initialize values in an array?

The initializer for an array is a comma-separated list of constant expressions enclosed in braces ( { } ). The initializer is preceded by an equal sign ( = ). You do not need to initialize all elements in an array.

What does it mean when an array is initialized to 0?

For C, if an initializer has fewer elements than the array begin initialized, the remaining elements are initialized to zero. The meaning of “zero” in this context is recursive: numbers are initialized to 0, pointers to a null pointer value, and so on. If the element type is an array, structure, or union, its elements are recursively set to 0.

What is the initial value of unassigned array values?

The initial value of unassigned array values is undefined (unless the array element type is a class/struct, in which case the default constructor will be called for each array element). In your first example, the behavior is undefined since you have not initialized the array element before using it.

How to initialize an array in C with different order?

With C89-style initializers, array elements must be initialized in subscript order. Using designated initializers, which allow you to specify the values of the subscript elements to be initialized, array elements can be initialized in any order. Designated initializers are described in detail in Designated initializers for aggregate types (C only).

How do you initialize an automatic variable in C?

Well, the automatic variables in C are not initialized at all by default. The only exception to this – if you are initializing at least one element of an array, the rest of it gets initialized to zero. The same zeroing effect cannot be got by assignment which is what you are doing down the lane.