Difference Between Structures and Unions in C Programming

Structure variables can be declared while

• While defining the structure

• After defining the structure

• Using typedef

Structure variables can be initialized while

• Creating the structure variables

• After creating the structure variables

• By using structure element names like any other variable names

Union variables can be declared while

• While defining the Union

• After defining the Union

• Using typedef

Union variables can be initialized while

• Creating the Union variables

• After creating the Union variables

• By using Union element names like any other variable names