Void pointer is a generic pointer.it has void at its datatype. It is a special type of pointer which can hold any type of data. While dereferencing through void pointer typecasting is must. We have studied that the address assigned to a pointer should be of the same type as specified in the pointer declaration. […]
Void pointer is a generic pointer, it has void as its dataype. It can hold the address of any datatype. While dereferencing through void pointer typecasting is must. In c malloc() and calloc() functions return void pointer. The size of the void pointer in C is the same as the size of the pointer of
Enumeration is a user defined datatype in C language. It is used to:1. Assign names to the integral constants.2. Makes a program easy to read and maintain program readability and better debugging capability..3. Enum has a great choice for using as flag.4. In enum, variables are automatically assigned with a key value starting from 0. Let’s see an example Output:
An enumeration (enum) is a special class that represents a group of constants. It is used to assign names to the integral constants which makes a program easy to read and maintain. The enum keyword is used to create an enum. The constants declared inside are separated by commas. For example, Sunday, Monday, Tuesday, Wednesday are the names of
In a union, at most one of the data members can be active at any time, that is, the value of at most one of the data. Members can be stored in a union at any time. The size of a union is sufficient to contain the largest of its data members. Each data member
A union is essentially a structure in which all of the fields overlay each other. At a time only one field can be used. Don’t know what are unions in C? Read: Unions in C Table: Difference between Structure and Unions in C Table: Difference between Structure and Unions in C Join Our Telegram Group
A union is a user defined datatype that also like structure allows to store different datatypes but in union it stores in similar location. In union one member can contain only one value at a time. So, the size of union will be lesser than the size of structure. So, union is more efficient where
In C language, sizeof() operator is used to calculate the size of structure, variables, pointers or data types, data types could be pre-defined or user-defined. Using the sizeof() operator we can calculate the size of the structure straightforward to pass it as a parameter. Let us see and example program to calculate the size of
Type Of Operator Operators Associativity () [] . Left to Right Unary ! ~ ++ — * & (type) sizeof() + – Right to left Arithmetic * / % Left to Right Arithmetic + – Left to Right Shift << >> Left to Right Comparison < <= > >= Left to Right Comparison ==
Like any other variable, a structure variable can also be initialized where they are declared. There is a one-to-one relationship between the members and their initializing values. To access the members, we have to use ” . “(the dot operator). Don’t know what is structure type data in C? Read: Structure datatype in C Example
Initializing and accessing members of a structure type data in C Read More »
