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C Interrupts
How are interrupts executed in C? Where are interrupts stored in the memory? What actually occurs when interrupts are encountered?
rkanna
- Dec 26th, 2008
When ever interrupt will occurs (ex: press keypoard or etc...) while excuting C programming the control stop execution and pushed current data in stack and switch to interrupt handler and then ca...
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How to program a scrabble game?
zoyarasul
- Jul 17th, 2008
#include<stdio.h>#include<stdlib.h>#include<conio.h>#include<graphics.h>#include<dos.h>#include<alloc.h>#include<process.h>union REGS in,out;void *buf;int siz...
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File Compression
How can we compress any text file using c. can anybody provide me sample code
Sandhya.Kishan
- Mar 8th, 2012
The function comp() can be used for compression.The compression logic for comp() should provide the fact that ASCII only uses the bottom (least significant) seven bits of an 8-bit byte. The compressio...
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Memory allocations of structure
What is the slack memory concept in allocation of structure memory?
mkulacz
- May 22nd, 2009
I think slack memory is the extra memory at the end of a structure which may go unused. It may also include unused memory within a struct. For example, if a struct includes a short and then an int, in...
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Virtual Functions
Explain the virtual table generated in memory at the time of declaration of virtual function?
abhimanipal
- Jul 4th, 2009
In C++ there is the concept of virtual functions. The resolution of these functions takes place at run time. A V table is used for this purpose.
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NULL Macro
What is NULL Macro? What is the difference between a NULL Pointer and a NULL macro?
jbode
- Jan 31st, 2011
From the C language standard, section 6.3.2.3, paragraph 3:--------An integer constant expression with the value 0, or such an expression cast to void *, is called a null pointer constant. 55) I...
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Funtion pointer
What is the purpose and use of function pointers?
deepakupreti
- Mar 30th, 2009
Function pointer holds the address of a function. Every function has a address. We can call the function by calling the function pointer.
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Binary portability
What is code/binary portability?
crimola
- Jan 9th, 2009
Code portability is generally defined as C code (in the case of C) that adheres to the rules of the C standards and is Architecture (Pentium, PowerPC, MIPS, etc) as well as Platform (PC, Mac OS, Linux...
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Convert Binary Number to Octal
Write a C program to convert a binary number to its corresponding octal number.
kakiharanadh
- Apr 14th, 2009
#include<stdio.h>#include<conio.h>main(){ int i=12; void printoctal(int,int); printoctal(i,i); getch();}void printoc...
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Storage Class and Storage Variables
What is Storage Class?
What are Storage Variables?nikhil verma
- Sep 2nd, 2010
Value of the variables stored in some physical location in memory or
register, on the basis of this storage class is defined in 4 ways:
1. Automatic storage class
2. External storage class
3. Static storage class
4. Register storage class
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Link List
What is Link list? What is purpose of link list in programming.
Aadarsh sharma
- May 4th, 2010
Linked list is a set of array (uses 2 line array) i.e INFO (information part) and LINK (address part)we use it for storing of data dynamically i.e it does not leave buffer space (less wastage of memory)
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TSR
Explain How Terminate & Stay Resident (TSR) and Offline programming differ from one another.
Fossila
- Dec 6th, 2009
TSR stands for Terminate- and Stay-Resident programs.TSR are programs which get loaded in memory and remain or stay there (resident) in memory permanently. They will be removed only when the computer ...
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Srand() and rand() Functions
Explain srand() and rand() Functions
UncaAlby
- Apr 20th, 2010
rand() uses what is known as a "multiplicative congruential" method for generating pseudo-random numbers between 0 and 32767. (The exact maximum can be system dependent.)It will start ...
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Platform Independent IPC Methods
Which IPC methods are Platform independent?
hansa31
- Jun 25th, 2010
We normally use IPC for exchange of data between multiple threads or processes. Following IPC are platform independent, 1. Files 2. Socket 3. Named Pipes 4. Shared Memory 5. Message Queue
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End of File
What is the significance of EOF?
md.jahidanwar
- Jun 3rd, 2010
EOF is simply a macro designating a negative value. Some books are refered EOF is -1. It doesn't have to be -1. You can signal end-of-file from the command line with a control character(Ctrl ^), usually a combination of ctrl+z for Windows systems or ctrl+d for POSIX systems. Thanks, MJA
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All Cominations of a Word
Write a C program for all possible combinations of letters in a word?
rocking.piyush
- Feb 22nd, 2011
# include <stdio.h> # include <string.h> void comb(char *,int,int);void swap(char *,char *); main(){ char s[100]; gets(s); int len = strlen(...
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Storage Clssses and Memory Organization
What are storage classes? Explain its memory organization?
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Pointer Drawback
What is the drawback of using pointer?
abhijeetvv
- Dec 11th, 2012
Since the pointers point to a memory location issues of dangling pointers and wild pointers can occur. Dangling pointers are those pointers when the data at which they are pointed may have been modifi...
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Storage Class
What is Storage Class?
arunkumarraju
- Jan 13th, 2011
A storage class defines the scope (visibility) and life time of variables and/or functions within a C Program.There are following storage classes which can be used in a C Programautoregisterstaticextern
C Interview Questions
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