Select the correct answerWhat is the purpose of the union keyword in C?OptionsTo define a constantTo declare a new data typeTo create a structureTo allocate memory for an array

Multi Choice Type QuestionWhat happens if you initialize more than one member of a union in C?Marks : 1Negative Marks : 0Answer hereIt results in a compilation error.The last member initialized retains its value.All initialized members share the same memory.It is not possible to initialize multiple members.ClearNext

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

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

elect the correct answerWhat is the purpose of the typedef keyword in C?OptionsTo declare a pointerTo define a constantTo declare a new data typeTo create an array

Explain declaration of pointer variables, initialization and accessing a variable through its pointer. Explain how union is declared and how union member is accessed. Explain realloc() and free() function with example. Explain array within structures with example. Explain file opening and closing in C.