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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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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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main()
{
int i;
clrscr();
printf("%d", &i)+1;
scanf("%d", i)-1;
}
">Main() { int i; clrscr(); printf("%d", &i)+1; scanf("%d", i)-1; }
A) Runtime error. Access violationB) Compile error. Illegal syntaxC) None of the aboveD) Runtime errorExplanation: printf( ) prints address/garbage of i, scanf() dont have & sign, so scans address for i +1, -1 dont have any effect on code.
Ajay Kanse
- Dec 22nd, 2008
The printf will give some junk value (address) and scanf will wait for the input from user. once u enter a value u'll get Bus error(coredump).
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Consider the following program sigmentint n,sum=1;switch(n) {case 2:sum=sum+2;case 3:sum*=2;break;default:sum=0;} if n=2, what is the value of suma.0b.6c.3d.none
B
Bhoomika sharma
- Dec 21st, 2008
As we have n=2, thus control goes to case2: thus,value of sum becomes 3 and since there is no break stmt thus,sum is again found as (2*3)=6.Thus the value of sum is 6.
ab
- Sep 29th, 2006
Ans is d
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Difference between class and structure
Bhoomika sharma
- Dec 21st, 2008
We can list as:1. In classes the default scope is private whereas in structures u have public.equir2.Also, u can define the scope according to is requiremeuctunts in claasses.3. In classes u can creat...
lotus08
- Jun 27th, 2008
Structure is a collection of data and class is a collection of data and functions.by defalut struct is public whereas class is private
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Which of the following go out of the loopo if expn 2 becoming falsea.while(expn 1){...if(expn 2)continue;}b.while(!expn 1){if(expn 2)continue;...}c.do{..if(expn 1)continue;..}while(expn 2);d.while(!expn 2){if(expn 1)continue;..}
C
Bhoomika sharma
- Dec 21st, 2008
The answer is very klear,as As the loop says when d expression1 is true it continues and then goes into the while condition to see dat if the expression 2 is true then only the loop continues,else breaks off from the loop when the expression2 goes false.
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}
">Main(){ int i; float *pf; pf = (float *)&i; *pf = 100.00; printf("n %d", i);}
A) Some Integer not 100B) 100C) Runtime error.D) None of the aboveExplanation: Output = 0
wrongmove
- Dec 11th, 2008
IEEE-754 Floating is used to store Float. So while storing float s store with encoded format. When i is used to access this value it reads 4 bytes which are nothing but IEEE-754 Floating encode. if you type that number in IEEE-754 Floating calculator it will show it as 100.
bipi2g
- Jun 28th, 2007
Yes, Compile and run by Dev-C++. Output is garbage (i see 1120403456 in output window).
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Write a program to print the given integers in the corresponding wordings?
Say for eg. if 123 is given as input the output should be displayed as
sriranga.ch
- Sep 25th, 2008
Main() { int num=123; char c;while(num>1){c=num%10;num=num/10;printf("%c",c);}}
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Increment Operator
Explain why p++ is faster than p+1?
pirabid
- Sep 19th, 2008
This has to do with the processor, memory read cycles, and processor instructions. All processors have separate increment/decrement instructions for increment/decrement operations. Consequently, when ...
kaivalya1989
- Jul 12th, 2008
static memory allocation :the memory allocation is done at the time of compilation itself..it is known as static because this allocation cannot be changed is less memory or more memory is needed at th...
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fun(--n);
}
}
What is the output of the above program? Explain.">#includevoid fun(int);void main(){ inta; a=3; fun(a); }void fun(int){ if(n>0) { fun(--n); printf("%d",n); fun(--n); } } What is the output of the above program? Explain.
0 1 2 0
coolquasar
- Sep 15th, 2008
It proceeds like thisfun(3)fun(2)fun(1)fun(0)fun(-1)printf("%d",n)(Here n is 0)fun(-1)printf("%d",n)(Here n is 1)fun(0)printf("%d",n)(Here n is 2)fun(1)fun(0)printf("...
jintojos
- Jul 2nd, 2008
The out will be just like 3 2 1 0 2 1 0 1 0 0... not sureThis is a recursive function with 2 recursive calls one at line 13 and other in at line 15.The variable 'a' initial...
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getch();
}
What will be the output of above program?How?">#include#includevoid main(){static int a[]={0,1,2,3,4};clrscr();int *p[]={a,a+1,a+2,a+3,a+4};printf("n%un%un%d",p,*p,*(*p));getch();}What will be the output of above program?How?
coolquasar
- Sep 15th, 2008
It works like thisAddress of a[0] = aa[0] = 0 (<--1000 Address)a[1] = 1 (<--1004 Address)a[2] = 2 (<-- 1008 Address)a[3] = 3 (<-- 1012 Address)a[4] = 4 (<-- 1016 Address)Address of p[0]...
Swati H. Sanu
- Oct 15th, 2007
P is the adress of a and *p is value at address a[0] and *(*p) is again address of a
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What do you mean by critical section in c?
rashmi.mohanty
- Sep 9th, 2008
critical section in c ,is a piece of code that accesses a shared resource (data structure or device) that must not be concurrently accessed by more than one thread/process of execution.eg :- whil...
deshdeepak53
- Jul 17th, 2008
Critical section is the part of the code that can be assessed by multiple threads or processes at the same time.
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Can we define an array without any constant expression? If Yes, How?
prachiti
- Sep 9th, 2008
Yes. /*Array of Strings*/char* _animals[] = { "Tiger","Lion", "Dog", "Cat" };/*Array of ints*/int numbers[] = {1,2,3,4,5};number of elements of such arrays can be obtained bycount = (sizeof(_animals)/sizeof(_animals[0]));
funkreality
- Jan 8th, 2008
Int *a=new int[];arrays and pointers are similar things .if now you want to access any element just type a[element no] and access the element.
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BSS Segment
What is BSS segment? Where it will be?
laxmii.s
- Aug 21st, 2008
BSS:Block Started by Symbol. It is in memory?segment. While executing the program all Uninitialized global and static variables are placed in this BSS Segment??????
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How to print all the possible combinations of a given integer ?
.for eg 12 is the entered no.then print 12, 21if 123 is entered nothen print 123, 231, 321, 132, 213, 312.
thiruacspvrp
- Aug 15th, 2008
Yes it is possible.I will give logicFirst you devide the input by 10 through modulus operator(%).
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strncpy() & memcpy() function in C
what is the difference between strncpy()(not strcpy) & memcpy() function in C?
jca_dips
- Jul 18th, 2008
strncpy copies upto null or specified no. of bytes, whichever is less. But memcpy overlooks null, and copies all specified no. of bytes. None of them adds null in destination string by itsel...
janhavibend
- Jul 14th, 2008
When I checked with strncpy and memcpy both are not terminating string with '' after copying when dst size is less than src size. otherwise both will terminate dst string with '' when sizeof(dst) >= sizeof(src)
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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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Do while() & while()
What is the minimum execution of do while() and while()?if there is a change why is it so?
kaivalya1989
- Jul 12th, 2008
while :it checks the neccessary condition before the exexution of loopif the condition=true then loop is executed and after one loop again the condition is checked and if true loop is again executed.....
sivarama vinaykumar
- Jun 29th, 2008
while is entry control statement which checks the condition before the compiler executes the statements in the loop.so the minimum execution of while is '0'. do while is a exit control s...
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What is far pointer?
jintojos
- Jul 7th, 2008
Far pointers are mainly used for 32 bit addressing that is the segment offset addressing. Normal pointers?can onLy access the memory locations which is allocated by the compiler for that program. Far...
mahendra
- Apr 11th, 2006
When the function is present out side the segment, it requires base address and offsetaddress. To access the function, the base and offset addersses are required to specify. This is like the far jum...
C Interview Questions
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