A union cannot be nested in a structure

More Questions from Structures, Unions, Enums

• Bit fields CANNOT be used in union.
• one of elements of a structure can be a pointer to the same structure.
• A structure can contain similar or dissimilar elements
• It is not possible to create an array of pointer to structures.
• If a char is 1 byte wide, an integer is 2 bytes wide and a long integer is 4 bytes wide then will the following structure always occupy 7 bytes? struct ex { char ch; int i; long int a; };
• Can we have an array of bit fields?
• size of union is size of the longest element in the union
• Can a structure can point to itself?
• If the following structure is written to a file using fwrite(), can fread() read it back successfully? struct emp { char *n; int age; }; struct emp e={"CuriousTab", 15}; FILE *fp; fwrite(&e, sizeof(e), 1, fp);
• Is there easy way to print enumeration values symbolically?

Discussion & Comments