The ones who are crazy enough to think they can change the world are the ones who do.

- Steve Jobs

C Files Tricky Interview Questions

In most of the MNC interview questions such as in ZOHO interview question, IVTL Infoview interview questions, Amazon interview questions, GOOGLE interview questions, Infosys interview questions and even in Voonik interview questions, We come across several Tricky C Questions about which 2:5 of the questions are from Files in c. Solving that kind of tricky C questions is not an easy task for all C programmers. We need more practices to solve it with ease. So we provide 25+ interesting C questions in Files to make your MNC interview very easy.

C Files Questions

21.What will be the output of the C program?

#include<stdio.h>
int main()
{
	fprintf(&_streams[1], "This will display");
	return 0;
}

A. Prints nothing✘

B. This will display✔

C. Compilation Error✘

D. Linker Error✘

x

Option: B

Explanation

C has a numerous number of predefined macors. In this program, we have used &_streams[1] which is a macro. &streams[1] = stdout which is defined in stdio.h header file. It also have the following macros:
#define stdin &_streams[0]
#define stdout &_streams[1]
#define stderr &_streams[2]
#define stdaux &_streams[3]
#define stdprn &_streams[4]

✉ Answer

22.File Opening is

A. not necessary✘

B. not using any library function✘

C. a default action✘

D. an action of connecting a program to a file✔

x

Option: D

Explanation

If you don't mention the fopen() function, the will not know where to read and write. It is the action to connecting a file with program to write or read data or to perform any action.

✉ Answer

23.File Pointer is a

A. a buffer pointer✘

B. a stream pointer✘

C. a pointer to FILE datatype✘

D. All the Above✔

x

Option: A

Explanation

FILE is a datatype in C which is defined in "stdio.h" header file. It defined like this:
File control structure for streams.
typedef struct {
short level;
unsigned flags;
char fd;
unsigned char hold;
short bsize;
unsigned char *buffer, *curp;
unsigned istemp;
short token; } FILE;
source: Turbo C version 3.0

✉ Answer

24.If an error occurs, the function fseek() will returns