What is the primary difference between a structure and a union in C?Marks : 1Negative Marks : 0Answer hereStructure allows nested membersUnion allows nested membersStructure does not allows multiple membersUnion allows only one active member

What is the key difference between a structure and a union in C?*1 pointA structure can store multiple data types, a union cannotA union can store multiple data types, a structure cannotIn a structure, only one member can be accessed at a timeIn a union, only one member can be accessed at a time

structures in CA structure is a user-defined data type available in C that allows to combining data items of different kinds. Structures are used to represent a record.Defining a structure: To define a structure, you must use the struct statement. The struct statement defines a new data type, with more than one member. The format of the struct statement is as follows:   struct [structure name]   {       member definition;       member definition;       ...       member definition;   };unionA union is a special data type available in C that allows storing 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 purposes.Defining a Union: To define a union, you must use the union statement in the same way as you did while defining a structure. The union statement defines a new data type with more than one member for your program. The format of the union statement is as follows:    union [union name]    {       member definition;       member definition;       ...       member definition;    };Similarities between Structure and UnionBoth are user-defined data types used to store data of different types as a single unit.Their members can be objects of any type, including other structures and unions or arrays. A member can also consist of a bit field.Both structures and unions support only assignment = and sizeof operators. The two structures or unions in the assignment must have the same members and member types.A structure or a union can be passed by value to functions and returned by value by functions. The argument must have the same type as the function parameter. A structure or union is passed by value just like a scalar variable as a corresponding parameter.‘.’ operator is used for accessing members.Consider the following C declaration. struct {     short s[5];    union {          float y;          long z;     }u; } t;Assume that objects of the type short, float and long occupy 2 bytes, 4 bytes and 8 bytes, respectively. The memory requirement for variable t, ignoring alignment considerations, isa.22 bytesb.14 bytesc.18 bytesd.10 bytes

Which of the following structure(s) is/are correct?  Tick all correct answer(s)  No partial marks and no negative marks.Select one or more:struct aa {     int a;     float b; };struct aa {     int a;     float b;     struct aa var; };struct aa {     int a;     float b;     struct aa *var; };

Multi Choice Type QuestionWhat determines the size of a union in C?Marks : 1Negative Marks : 0Answer hereThe biggest member in the unionThe sum of the sizes of all membersThe first member in the unionThe last member in the union

Is there any scenario in C where it is not feasible to have identical members in a structure and a union? Consider A as a structure and B as a union.a.sizeof(A) is greater than sizeof(B)b.sizeof(A) is less than to sizeof(B)c. sizeof(A) is equal to sizeof(B)d.No impact on size