Exercise: Structures Unions Enums

Questions for: Structures Unions Enums

size of union is size of the longest element in the union
A:
Yes
B:
No
C:
D:
Answer: A
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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={"ExamAdept", 15};
FILE *fp;
fwrite(&e, sizeof(e), 1, fp);
A:
Yes
B:
No
C:
D:
Answer: B
Since the structure contain a char pointer while writing the structure to the disk using fwrite() only the value stored in pointer n will get written. so fread() fails to read.
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It is not possible to create an array of pointer to structures.
A:
True
B:
False
C:
D:
Answer: B
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The '->' operator can be used to access structures elements using a pointer to a structure variable only
A:
True
B:
False
C:
D:
Answer: A
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A structure can contain similar or dissimilar elements
A:
True
B:
False
C:
D:
Answer: A
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