C interview questions – page 13

X = fopen (b, c) what is b? a) pointer to a character array which contains the filename b) filename whithin double quotes c) can be anyone of the above d) none

Write a program which accepts a filename as a command line argument and reverses the contents of the file( ie first character becomes the last character of the file and so on) Input: The program takes the file name whose content should be reversed. Output

What would be the output of the following program? main() { int i=4; switch(i) { default: printf("n A mouse is an elephant built by the Japanese"); case 1: printf(" Breeding rabbits is a hair rai

which of s, t and u are availeble to a function present in another file a. only s b. s & t c. s, t, u d. none ...

What is extern?

If the following program (myprog) is run from the command line as myprog friday tuesday sunday, What would be the output? main(int argc, char *argv[]) { printf("%c",*++argv[1]); }

Int i = 20; printf ("%x", i); what is the output? a) x14 b) 14 c) 20 d) none of the above

What is the output of the above program segment ?

Pick up the correct function declaration.

When you compiler a C and C++ code on X86 processor, what are the difference you see in object file?

1.WAP find the largest of 4 no using macros2.WAP read a line from file from location N1 to N2 using command line agruments Eg:exe 10 20 a.c

What is the output of the following program:int main(){ char buff[]={ 0x11,0x11,0x11,0x11,0x22,0x22,0x22,0x22,0x33,0x33,0x33,0x33}; char* pEnd = buff + sizeof(buff) -1; long * plong = buff; short* pshort = buff; for(; plong<pEnd; plong++)

Give difference between structure and union and demonstrate union uses with examples.

Read the function conv() given below

when redirected to a screen what will be printed. 2 when redirected to file what will be printed.

Z = scanf("%d %d", &x, &y); printf("%d", z);

For(i=0; i<=10; i++, printf("%d",i));

What is the output of the program?

What is :- Token , identifier , block , parameter , argument , scope of variable , Macro ?

Which of the following about automatic variables within a function is correct ?

Given definition for a function which returns an array of pointers with argument of int*.

How do u have constant members in a class?

What is the value of *p; a) 2 b) 3 c) 4 d) 5 2) What is the value of (p - (&p - 2))? a) b) 2 c) d)

Sizeof(structure)?

Write your own grep command in C. your program should handle basic regular expressions like * , . , ^ , $

1)What is static identifier? 2)Where are the auto variables stored?

A variable carries a value.(already assigned OR from Scanf..what ever the way). I want to know whether the variable is positive or negative.Conditions:-----------1.NO looping logic should be used such as for ..while..etc.2.should not use > or <.3.should n

Main must be written as

Assume necessary header files are included. O/P ?

Which of the following about the C comments is incorrect ?