Difference Between Array and Structure

Computer ProgrammingProgrammingMiscellaneous

In this post, we will understand the difference between array and structure.

Array

  • It refers to a collection that consists of elements of homogenous/same data type.

  • It uses subscripts/ ‘[ ]’ (square brackets) to access the elements.

  • It is a pointer that points to the first element of the collection.

  • The array objects can’t be instantiated.

  • The size of array is fixed based on the number of elements in the array.

  • This size is the product of number of elements and size of every element.

  • Bit field is not possible in an array.

  • It is considered as a primitive data type.

  • Traversing through and searching for elements in an array is quick and easy.

  • It can be declared using the ‘[ ]’.

  • Array size is fixed and is basically the number of elements multiplied by the size of an element.

  • It is stored in contiguous memory locations.

Example

data_type array_name[size];

Structure

  • It is a collection that consists of elements of heterogenous/dissimilar data types.

  • It uses the ‘.’ (dot operator) to access the elements.

  • It isn’t a pointer.

  • It can be instantiated.

  • The size is not fixed.

  • This is because the elements in a structure can be of different data types and sizes.

  • Bit field is possible to create in a structure.

  • It can be declared using the ‘struct’ keyword.

  • It is a user-defined datatype.

  • Traversing and searching through a structure is slow and complex.

  • They may or may not be stored in a contiguous memory location.

Example

struct sruct_name {
   data_type1 ele1;
   data_type2 ele2;
};
raja
Published on 24-Mar-2021 13:31:58
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