If the following structure is written to a file using fwrite(), can fread() read

CuriousTab

C Programming C# Programming C++ Programming Database Java Programming Networking

Biochemical Engineering Biochemistry Biotechnology Chemical Engineering Civil Engineering Computer Science Digital Electronics Electrical Engineering Electronics Electronics and Communication Engineering Mechanical Engineering Microbiology Technical Drawing

Current Affairs General Knowledge

Data Interpretation Logical Reasoning Non Verbal Reasoning Verbal Ability Verbal Reasoning

AIEEE Bank Exams CAT GATE IIT JEE TOEFL

Analyst Bank Clerk Bank PO Database Administrator IT Trainer Network Engineer Project Manager Software Architect

Discussion

Home ‣ C Programming ‣ Structures, Unions, Enums See What Others Are Saying!

Question

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);

Options
A. Yes
B. No

Correct Answer

No

Explanation

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.

More questions

1. Bitwise can be used to reverse a sign of a number.
Options
A. Yes
B. No

Discuss

Correct Answer: No

2. Is it necessary that in a function which accepts variable argument list there should be at least be one fixed argument?
Options
A. Yes
B. No

Discuss

Correct Answer: Yes

3. Bitwise can be used to generate a random number.
Options
A. Yes
B. No

Discuss

Correct Answer: No

4. A function that receives variable number of arguments should use va_arg() to extract the last argument from the variable argument list.
Options
A. True
B. False

Discuss

Correct Answer: False

5. Bitwise & can be used to check if more than one bit in a number is on.
Options
A. True
B. False

Discuss

Correct Answer: True

6. The preprocessor can trap simple errors like missing declarations, nested comments or mismatch of braces.
Options
A. True
B. False

Discuss

Correct Answer: False

Explanation:

False, the preprocessor cannot trap the errors, it only replaces the macro with the given expression. But the compiler will detect errors.

7. It is necessary that a header files should have a .h extension?
Options
A. Yes
B. No

Discuss

Correct Answer: No

Explanation:

No, the header files have any kind of extension.

8. Bitwise | can be used to set multiple bits in number.
Options
A. Yes
B. No

Discuss

Correct Answer: Yes

9. Bitwise & can be used to check if a bit in number is set or not.
Options
A. True
B. False

Discuss

Correct Answer: True

10. A pointer union CANNOT be created
Options
A. Yes
B. No

Discuss

Correct Answer: No

Comments

Enter a new Comment

More in C Programming:

Complicated Declarations Constants Declarations and Initializations Expressions Floating Point Issues Input / Output Library Functions Pointers Strings Arrays Bitwise Operators C Preprocessor Command Line Arguments Control Instructions Functions Memory Allocation Structures, Unions, Enums Variable Number of Arguments

Aptitude

Time and Distance
Volume and Surface Area
Problem on Trains
Permutation and Combination

Engineering

Civil Engineering
Computer Science
Mechanical Engineering
Technical Drawing

Programming

C Programming
C# Programming
C++ Programming
Java Programming

Reasoning

Logical Reasoning
Non Verbal Reasoning
Verbal Ability
Verbal Reasoning

CuriousTab

CuriousTab

Discussion

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);

More questions

More in C Programming:

Aptitude

Engineering

Programming

Reasoning

Links

CuriousTab

CuriousTab

Discussion

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);

More questions

More in C Programming:

Aptitude

Engineering

Programming

Reasoning

Links

Social

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);