Top 10 Union advantages
Read moreWhat is the use of unions in C?
C unions allow data members which are mutually exclusive to share the same memory . This is quite important when memory is valuable, such as in embedded systems. Unions are mostly used in embedded programming where direct access to the memory is needed.
Read moreWhat is typedef union in C++?
Structures are used to group together different data elements (types of variables) under the same name . These data elements, known as members, can have different types and different lengths.
Read moreHow do C unions work?
A union is a special data type available in C that allows to store different data types in the same memory location . You can define a union with many members, but only one member can contain a value at any given time. Unions provide an efficient way of using the same memory location for multiple-purpose.
Read moreWhat is the meaning of typedef?
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 moreCan typedef be used in union?
The use of a typedef for a union type is very similar . typedef union Float Float; union Float { float f; char b[sizeof(float)]; }; A structure similar to this can be used to analyze the bytes that make up a float value.
Read moreWhat is union function in C?
The UNION operator is used to combine the result-set of two or more SELECT statements . Every SELECT statement within UNION must have the same number of columns. The columns must also have similar data types. The columns in every SELECT statement must also be in the same order.
Read more