A pointer value is a data object that refers to a memory location. Each memory locaion is numbered in the memory.The number attached to a    memory location is called the address of the location.

subbu malepati

• Dec 3rd, 2006

Hi,int *ptr=123;so ptr is pointer varible. suppose the adress of ptr is 2002( Assume) AT this mem-locn: value 123 is saved.to access address use & operatorto access value at the address use * opertator.

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manohar

• Jan 3rd, 2007

Dangling pointer is a pointer which is pointing to the destroyed object or which does not have proper address. A pointer should be intialized to zero once it is freed after allocating memory to that ...

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1) If either operand of an arithmetic operator is unsigned long, the other operand is promoted to unsigned long. 2) If either operand of an arithmetic operator is unsigned int, the other operand is promoted to unsigned int. 3) If either operand of an arithmetic operator is int, the other operand is promoted to int. 4) If either operand of an arithmetic operator is double, the other operand...

ykbharat

 Profile Answers by ykbharat Questions by ykbharat

• Mar 20th, 2007

Here we cant say the default promotion without knowing the other operand.But if two operands are of different datatypes and the arithmetic operation is performed on these operands the compiler allocat...

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dasam

 Profile Answers by dasam Questions by dasam

• Mar 31st, 2007

We can do __attribute__((packed)) but be careful the code is not portable to some operating systems.

dasam

 Profile Answers by dasam Questions by dasam

• Mar 31st, 2007

Structure padding problem can be avoided by using __atribute__((packed)) after each element in the structure.

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An lvalue is an expression to which a value can be assigned. The lvalue expression is located on the left side of an assignment statement, whereas an rvalue is located on the right side of an assignment statement. Each assignment statement must have an lvalue and an rvalue. The lvalue expression must reference a storable variable in memory. It cannot be a constant.  

ashoksurati

 Profile Answers by ashoksurati Questions by ashoksurati

• Apr 5th, 2008

Lvalue is is a memory location,whose value is not constant i.e it's value is changed when a new value entered into that location.And also it can be say as, it is an expression,where  left side we have an identifier and right side(rvalue) the value.

rupa

• Nov 1st, 2007

lvalue is an expression which refers to the memory location where the variable is stored..eg -           int * E = 5;      here, *...

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zoyarasul

 Profile Answers by zoyarasul Questions by 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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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

 Profile Answers by abhimanipal Questions by 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

 Profile Answers by alokag Questions by 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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0 0 1 3 1Explanation :Logical operations always give a result of 1 or 0 . And also the logical AND (&&) operator has higher priority over the logical OR (||) operator. So the expression ‘i++ && j++ && k++’ is executed first. The result of this expression is 0 (-1 && -1 && 0 = 0). Now the expression is 0 || 2 which evaluates to 1 (because OR operator always gives 1 except for ‘0 || 0’ combination-...

abhimanipal

 Profile Answers by abhimanipal Questions by abhimanipal

• Jan 30th, 2010

Although the answer posted above is correct. There is one mistake in the explanation. Beena says that && operator has higher precedence tha || operator so && is evaluated first. But in...

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Answered by: Prasad

• Apr 27th, 2007

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Constant pointer is NOT pointer to constant. Constant pointer means the pointer is constant. For eg:
Constant Pointer
int * const ptr2 indicates that? ptr2 is a pointer which is constant. This means that ptr2 cannot be made to point to another integer. However the integer pointed by ptr2 can be changed.



Where as a Pointer to constant is
const int * ptr1 indicates that ptr1 is a pointer that points to a constant integer. The integer is constant and cannot be changed. However, the pointer ptr1 can be made to point to some other integer.

Jegan Chakkravarthy

 Profile Answers by Jegan Chakkravarthy Questions by Jegan Chakkravarthy

• Jan 7th, 2011

An ordinary pointer variable preceeded with the "const" modifier. This prevents the value initialised from getting changed.

anandkumarjha

 Profile Answers by anandkumarjha Questions by anandkumarjha

• Aug 29th, 2010

Absolutely there is the vast difference between constant pointer and the pointer to a constant.it will be more clear with the examples of both the types.CONSTANT POINTER:-int const *a...this means the...

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printf("%d%d",f1(),f2());What is the sequence of function execution of the above statement. 1. printf, f1(), f2()2. printf, f2(), f1()3. f1(), f2(), printf4. f2(), f1(), printf.

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mohinuddinkhan  

 Profile Answers by mohinuddinkhan Questions by mohinuddinkhan

• Member Since Oct-2009 | Oct 30th, 2009

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Let's understand this by going through the following code

#include<stdio.h>
int f1();
int f2();

void main()
 {
 printf("%dt%d",f1(),f2());
}

int f1()
{
 printf("f1() enteredn");
 return 4;
}

int f2()
{
 printf("f2() enteredn");
 return 5;
}

O/P-

f2() entered
f1() entered
4        5

we can conclude f2() is 1st executed
then f1() and in the end printf().hence we can say the precedence of execution of functions are from right to left.

geek Jack

 Profile Answers by geek Jack Questions by geek Jack

• Aug 2nd, 2010

printf();then f2()then f1()then again printf()  to print the value in f1 f2 these are arguments to printf function.

omkar.lenka

 Profile Answers by omkar.lenka Questions by omkar.lenka

• Jul 29th, 2010

3)f1(),f2(),printf

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Write a program in C to find the 2 digit number which is 3 times its sum of its digits.

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Piyush Dixit  

 Profile Answers by Piyush Dixit Questions by Piyush Dixit

• Member Since Sep-2009 | Sep 18th, 2009

---

main()
{
int num,sum,i;
for(num=10;num<100;num++)
{
if(num==3*(num%10+num/10))
{
printf("%d",num);
}
}
}

crazysujith10

 Profile Answers by crazysujith10 Questions by crazysujith10

• May 17th, 2011

No number is printed

rahulshrimali

 Profile Answers by rahulshrimali Questions by rahulshrimali

• Mar 3rd, 2011

#include<stdio.h>#include<conio.h>void main(){ int i,j,k,l; clrscr(); for(i=0;i<10;i++) { for(j=0;j<10;j++) { k = (i+j)*3; l = 10*i + j; if(k != 0 && l !=0) { if(k == l) printf("%dn",l); } } }getch();}

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hrs1129  

 Profile Answers by hrs1129 Questions by hrs1129

• Member Since May-2008 | May 28th, 2008

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yes we can pass arguments if we pass argument ir would become commandline argument.
 eventhough static and constant variable are common for alla objects the value of static variable can be increased in time being but it cannot be increased in constant variable

jbode

 Profile Answers by jbode Questions by jbode

• Aug 22nd, 2011

One thing allowed by C that is *not* allowed by C++ is for main() to be called from within the program itself. IOW, in C, it's possible for main() to be recursive. The main() function in both C ...

Akhielsh Kumar

 Profile Answers by Akhielsh Kumar Questions by Akhielsh Kumar

• Aug 22nd, 2011

In c declaration must be just after opening braces { of method.
The is flexibility in c++.

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leorius47  

 Profile Answers by leorius47 Questions by leorius47

• Member Since Mar-2008 | Mar 4th, 2008

---

main()
 {
 if (printf("nHello World"))
  {
  }
}

rajasekhar469@gmail.com

• Sep 14th, 2011

Code
span style="color: #ff0000;">"hellow world"))
{}
}

ganapathi

• Aug 26th, 2011

Line 15: error: ""hello world"" may not appear in macro parameter list

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....and find the minimum number of notes to form that amount.
The denominations are 500,100,50,20,10,5,2,1 Rupee.

using any loop!!

Bincy Roy

• Jul 31st, 2012

"c #include int main(){ int amount,no_hun,no_fifty,no_ten,no_five,no_two,no_one,total_notes; printf(" Enter the amount: "); scanf("%d",&amount); no_hun=amount/100; amount=amoun...

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How to return multiple values in C language function?

Arpita Mishra

• Aug 4th, 2012

Multiple values can be returned from a function by using call by address i.e. pointers intelligently.

jbode

 Profile Answers by jbode Questions by jbode

• Jan 3rd, 2012

Strictly speaking, a C function can only *return* a single value; you cant write something like "a,b,c=f();". However, you can write to multiple function parameters in addition to returning a value (...

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baseersd  

 Profile Answers by baseersd Questions by baseersd

• Member Since Jun-2007 | Jul 27th, 2007

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Code
 
#include
"nEnter the limit for the series ");
scanf("%d""%d ", sum);
i = j;
j = sum;
sum = i + j;
}
getch();
}
 

keerthi

• Jun 7th, 2013

Code for fibonacci series

Code
#include<stdio.h>
"enter the size of the series");
scanf("%d""%d",sum);
i=j;
j=sum;
sum=i+j;
}
getch();
}
 

n.m.sudesh kumar

• Mar 20th, 2013

Code
#include<stdio.h>
#include<conio.h>
"enter the value of n:");
scanf("%d""the fibonacci series; %d
",pre);
sum=pre+next;
pre=next;
next=sum;
}
getch();
}

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Write a C program using arrays to count the numbers of positive and negative numbers which accepts the inputs as "size of the array" & "elements of the array" and outputs as "number of negative numbers in an array are" & "numbers of positive numbers in an array are" ?

shweta gupta

 Profile Answers by shweta gupta Questions by shweta gupta

• Jun 25th, 2014

Code
#include<iostream>
#include<stdio.h>
"enter the size of array""enter element of a["<<i<<"]=""total negative numbers "<<count_neg<<" and positive number is "

asdasda

• Aug 11th, 2013

Code
#include<conio.h>
#include<iostream>
"How many values: ""Enter value "<<a<<": "

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Akanksha Suneri

 Profile Answers by Akanksha Suneri Questions by Akanksha Suneri

• Apr 19th, 2015

Goto is the answer.

Bayapu

• Mar 10th, 2015

Goto is the answer, it can simulate break.

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Akanksha Suneri

 Profile Answers by Akanksha Suneri Questions by Akanksha Suneri

• Apr 19th, 2015

A: Semicolon

kavitha b h

• Mar 1st, 2015

A

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Ex:int a=10;int b=10;int sum=a+b;without using "+" operator calculate sum

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jintojos  

 Profile Answers by jintojos Questions by jintojos

• Member Since May-2008 | Jul 17th, 2008

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void main()
 {
          int a=10,b=20;
          while(b--) a++;
           printf("Sum is :%d",a);  
 }

mukesh

• Aug 10th, 2015

Simple

Code
span style="color: #ff0000;">"%d",c)
 
}

And

• Aug 29th, 2012

For two positive numbers:

int main(){
int a = 10;
int b = 10;

printf("%d",a ^ b | ((a & b)

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