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Differentiate between array and structures in C
The major differences between an array and a structure in C programming language are as follows −
Arrays | Structures |
---|---|
An array is a single entity representing a collection of data items of same data types. | A structure is a single entity representing a collection of data items of different data types. |
Individual entries in an array are called elements. | Individual entries in a structure are called members. |
An array declaration reserves enough memory space for its elements. | The structure definition reserves enough memory space for its members. |
There is no keyword to represent arrays but the square braces [] preceding the variable name tells us that we are dealing with arrays. | The keyword struct tells us that we can deal with structures. |
Initialization of elements can be done during array declaration. | Initialization of members can be done only during structure definition. |
The elements of an array are stored in sequence of memory locations. | The members of a structure are not stored in sequence of memory locations. |
The array elements are accessed and followed by the square braces [] within which the index is placed. | The members of a structure are accessed by the dot operator. |
Its general format is data type variablename [size]; | Its general format is as follows −struct <struct name>{ data_type structure member 1; data_type structure member 2; • • • data_type structure member N; } structure variable; |
For example,int sum (100); | For example,struct student{ char studname (25); int rollno; } stud1; |
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