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How does inheritance in C works?
abhimanipal
- Jul 9th, 2009
This is an example of inheritance ....struct parent { int x; int y;};struct child { parent p1; int a; int b;};int main(){ struct child c1; c1.p1.x=50; printf("%dn",c1.p1.x); return 0;}
rakio
- Jul 9th, 2007
By using multiple structures?means structure within a structure, we can achive inheritance in C.
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How is structure passing and returning implemented?
abhimanipal
- Jul 6th, 2009
Here is my code fragement. It shows passing the structure as argument and returning it as well #include <stdio.h>#include <stdlib.h>#include<math.h>#include<string.h>struct abc...
baseersd
- Jan 16th, 2008
Here i am trying to i)accept input through GetEmployeeDetails()ii)Print the same details through PrintEmployeeDetails()iii)Modify / Change the details through ModifyEmployeeDetails()iv)Print the modif...
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What happens when you overload the stack?
abhimanipal
- Jul 6th, 2009
I think if irrespective of the fact that it is overflow or underflow, we will get a segmentation fault
Pavan Kumar K.V.N.
- Dec 28th, 2007
Are you talking about overloading like in Object Oriented cocepts?See the Overloading can be achieved in the Object Oriented Systems by having the same name and but with different signatures right......This is not at all possible witht he Procedure Oriented Systems like C....
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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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Reallocating memory
When reallocating memory if any other pointers point into same piece of memory do you have to readjust these pointers or do they get readjusted automatically?
abhimanipal
- Jul 4th, 2009
If any pointers are pointing to the old memory location they have to be adjusted. C won't do it for you
alokag
- Jun 25th, 2009
While reallocating, there is no readjustments. The OS will just search for the required memory block(not in use) & if available pass its pointer to the user.Nb: It CAN be the same pointer you have before reallocation.
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Q1 How to swap Low-order byte and high order byte in an integer without using temporary variable ?Q2 write a program to print numbers from 1 to 100 without using any condition checking ?Q3 If we develop a project in C,then how can we create an .exe file of it?Q4 Write a program which accepts a filename as a command like argument and reverse the contents of the file (i.e firs character becomesthe last character of the file and so on)input: the program takes the file name whose content should be reversed output: the program reverse the contents of the file Q how can i call a function ,given its name as string?
rameshwar83
- Feb 12th, 2007
As this code have been posted for above problem .........#include#includemain(){int print(int n){printf("%d",n);n++;}static int n=1;print(n);}can anyone plz explain me how this code is working............my email id is rameshwar_pratap@yahoo.com
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String Concatination
How to concatenate the two string without using the predefined functions (such as strcat and strlen)?
vbablu
- Jul 2nd, 2009
void main() { char s[20]; int i,n;????????????????????????????? printf("enter a string");??????????????????????????????? scanf("%s",s);????????????????????????????? for(i=0;s[i]!='';i++)??????????????...
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Function pointer
What is function pointer in C program?
nivi.babuji
- Jun 18th, 2009
Each pointer will point to a data type like integer, float etc., similar to these pointers we can also have some special pointers that point to the memory location of the functions and these pointers are named as function pointers
prasad2315
- Aug 26th, 2008
Function pointer in concept same as interger pointer, char pointer.Functions also have address keeping this in mind function pointers can be defined as?variables, which point to the address of a function.
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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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}
">Const int perplexed = 2;#define perplexed 3main(){ #ifdef perplexed #undef perplexed #define perplexed 4 #endif printf("%d",perplexed);}
A) none of the aboveB) 4C) 2D) 0
indira.moparthi
- Apr 19th, 2009
Perplexed is a const variable. In the # define we are?trying to?modify the value which leads to an error.
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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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What is max/min heap?
burogini.vinod
- Feb 7th, 2007
Minimum heap means to sort in heap there must be atleast two nodes and maximum heap means any number of nodes may be there...
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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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Following declarations are sameconst char *s; char const *s;
A) TrueB) False
mihir_void
- Mar 5th, 2009
No, the declarations are not same Let us take see each one of them1. const char *s; Here the char is constant hence const char *s="hello" ; //alloweds[3]='o' ;//error as char is constants="bye";//thi...
kiranck007
- Jan 27th, 2006
i am sorry....actually there is no difference b/w const char *s;andchar const *s;but there is a difference b/w above two and and the below oneThe first two are interchangeable; they declare a pointer ...
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Which of the following is invalida.a+=bb.a*=bc.a>>=bd.a**=b
C
poojadev
- Mar 3rd, 2009
C is invalid>> is an error here.It can be used with console input and console output but this left chevron operotor cannot be directly used to assign.
Ranjit
- Apr 25th, 2005
Option d is invalid
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> (i - (i -1))));
}
}
">Main(){ signed int bit=512, i=5; for(;i;i--) { printf("%dn", bit = (bit >> (i - (i -1)))); }}
A) 128, 64, 32, 16, 8B) 256, 128, 64, 32, 16C) 512, 256, 128, 64, 32D) 64, 32, 16, 8, 4
sittoop
- Feb 26th, 2009
Right shift a number by 1 is equivalent to division of that number by 2^1.
Right shift a number by 2 is equivalent to division of that number by 2^2.Applying that, the answer is 256, 128, 64, 32, 16(left shift is opposite ~ multiplication)satyam_un
- Mar 13th, 2006
Ans is Bbecause the will b terminated after i=0;bit>>(i-(i-1)))means first it assignsi=5.the first value for bit is512>>(5-(5-1))=512>>1=512/2/1=256
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How will you print % character?
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How to print all the combinations of a given integer
Suppose i have given like integer 123.....then print like all the combinations 111,112,113,121......up to 333..
bathesabari
- Feb 17th, 2009
/*to print possible patern using given no*/#include<stdio.h>#include<conio.h>void main(){ int a[100],b[100],n,x=1,y,k,j,i,m,c; clrscr(); printf("enter no of nost")...
ravi_529
- Dec 24th, 2007
int main(int argc,char* argv[]){int i,j,k;int n,r;int dig[3]; printf("enter any three dig numbern"); scanf("%d",&n); dig[2]=n%10; n=n/10; dig[1]=n%1...
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Strip Comments
Write a program to read a file, strip the comments and write the output to another file.
nemuns
- Feb 2nd, 2009
#include<stdio.h>#include<stdlib.h>#include<string.h>enum ParseState { INITIAL, ONE_SLASH_READ, TWO_SLASHES_READ, ONE_SLASH_STAR_READ...
dima2000star
- Sep 18th, 2008
{FILE *f, *of;f = fopen("c:/myprog1.cpp", "r"); of = fopen("c:/comments.cpp", "a");char* ch = new char[2]; *ch = fgetc(f);int l=0;while (!feof(f)) {if ((*ch == ...
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Find ASCII value.
How to find the ASCII value of an element ?
chandrikakr
- Aug 8th, 2008
try this code:#include<stdio.h>#include<conio.h>main(){ char a; clrscr(); puts("Enter a character:"); a=ge...
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