Krishna To access union members we can use dot operator (.) between union variable and union member name as follows: <Union-Variable-Name>.<MemberAddress> For example, to access marks of union student we can do as follows: union student std2; std2.marks = 20; Now, the data member percentage of union student also contains the same value 20 but in … Read more
Union, is a collection of variables of different types, just like a structure, however a union can only store information in one field at one time. This means, a union can be viewed as a variable type that can contain many different variables as members (like a structure), but only actually holds one of them … Read more
A Structure can contain other Structure variables as members. This is called Nesting of Structures. For example address structure is a structure. We can define a nested structure called customer which contains address structure as follows: struct address { int house_number; char street_name[50]; int zip_code; char country[50]; }; struct customer { char name[50]; structure address … Read more
C programming language treats a structure as a user-defined data type; therefore you can initialize a structure like a variable. Here is an example of initialize product structure: struct product { char name[50]; double price; } book = { “C programming language”, 40.5 }; In above example, we defined product structure, then we declare and … Read more
The first way is to declare a structure variable immediately after the structure definition, as follows: struct address { int house_number; char street_name[50]; int zip_code; char country[50]; } struct_var1, struct_var2; In the second way, you can declare the structure variable at a different location after structure definition. Here is structure declaration syntax: struct address { … Read more
In some programming contexts, you need to access multiple data types under a single name for easier data manipulation; for example you want to refer to address with multiple data like house number, street, zip code, country. C array is a derived data type allow you to define type of variables that can hold several … Read more
Arrays provide a mechanism to declare a derived data type which is a collection of homogenous elements. This means each element has same data type. However, it is sometimes required to create a collection of non- homogeneous elements in which elements can be of different type. Consider the automation of student records in University of … Read more
C does not have true multidimensional arrays. However, because of the generality of C’s type system; we can have arrays of arrays. This is what a 2D Array is. Consider the example of 2D Array discussed in last article. In this case, each row is one-dimensional array of 2 elements. Now, all these rows are … Read more
The array which is used to represent and store data in a tabular form is called as Two Dimensional Array. Such type of array specially used to represent data in a matrix form. To declare Two Dimensional Array in C, the general syntax is as follows: <data-type> <Array-name> [<rows>][<columns>]; The rows and columns, both must … Read more
The array which is used to represent and store data in a linear form is called as Single or One Dimensional Array. To declare One Dimensional Array in C, the general syntax is as follows: <data-type> <Array-name> [<Array-Size>]; The Array-Size must be an integer constant greater than zero and data-type can be any valid C … Read more