A union is like a struct in that it generally has several fields, all of which are public by default. Unlike a struct, however, only one of the fields is used at any given time. In other words, it is a structure that allows the same storage space to be used to store values of different data types at different times.
Read moreWhich is better to use union or struct?
If you want to use same memory location for two or more members, union is the best for that . Unions are similar to the structure. Union variables are created in same manner as structure variables.
Read moreShould I use typedef in C?
It can almost be necessary when dealing with templates that require multiple and/or variable parameters. The typedef helps keep the naming straight. Not so in the C programming language. The use of typedef most often serves no purpose but to obfuscate the data structure usage .
Read moreWhy typedef is used in structure in C?
The C language contains the typedef keyword to allow users to provide alternative names for the primitive (e.g., int) and user-defined (e.g struct) data types . Remember, this keyword adds a new name for some existing data type but does not create a new type.
Read moreWhat is a typedef in C?
typedef is a reserved keyword in the programming languages C and C++ . It is used to create an additional name (alias) for another data type, but does not create a new type, except in the obscure case of a qualified typedef of an array type where the typedef qualifiers are transferred to the array element type.
Read moreWhat is typedef in C explain with example?
typedef is used to define new data type names to make a program more readable to the programmer . For example: | main() | main() { | { int money; | typedef int Pounds; money = 2; | Pounds money = 2 } | } These examples are EXACTLY the same to the compiler.
Read moreWhat is the union in C?
C Union. Union is an user defined datatype in C programming language . It is a collection of variables of different datatypes in the same memory location. We can define a union with many members, but at a given point of time only one member can contain a value.
Read more