I need to know Why there is need to operload () this.

I just need to know why we need to overload () it?
If u have any document/link then tell me.

Hi,

Can any body explain me about overloading concept of () operator?
I need to know why do we need to overlload () operator and how do we achieve that?

Thanks in Advance

Hi All,

If i have choice to either use simple array(char a[]) or map.
Which one i shall use, whether array or map.
i need to know wich technique will give better...

Hi,

Is there any tutorial that tells how to do dynamic binding in C.

Thanks in Advance.

Hi,
Can i use realloc to deallocate the memory allocated using new operator. For example:

int * i = new int (10);
realloc (i, 0);

Thanks in advance.

Hi,
Can someone expain why ompiler provide default Copy Constructor for every class. As i know there is only one reason that if Compiler does not provide the copy constructor, f we pass the...

Hi All,

Please expain me, in below giving statements which one is efficient.
int i=0;
i = i + 1;
or
i++;

2. In We Allocate the memory using malloc. between somewhere after allocating memory...

what will happen if we free the same memory two times in C.
for exam........
char *k=(char *)malloc(4);
free(k);
free(k);

what happened if we do't typecast return value of malloc
like that

int *a=malloc(10);

char *ptr="abc";
char *ptr1;
while(*ptr1++=*ptr++); //IT IS WORKING
while((*ptr1)++=(*ptr)++); //ERROR

PLS EXPLAIN ME.

Can someone explain me
how these character or escape sequence are treated while finding string size(through sizeof() operator)

\0 \n \a \1 \2
for example char str[]="\1abc\0\0"...

char str[] = {0123,'4','5','s','\n','\0'};
how it is treated like this first element like 0123.it is very much confusing pls clear my doubt.

consider the statement
++*p++
if it is valid then evaluate it.

Consider The Following Statements
*p++=*(p++)

These Two Are Equals.can Someone Explain Me How.
Is Parentehsis Not Alter The Behaviour? :?:

Consider the following programme
void main()
{
char str[]="\12345s\n";
printf("%d",sizeof(str));
}

Output is :6
can someone explain me...

consider the programme
void main()
{
unsigned i=1;
signed j=-1;
if(i<j)
printf("less");
}

output is:

#include<iostream.h>
void main()
{
cout<<"hello";
}
//IF WE COMPILE THIS PROGRAMME IT WILL NOT PRINT HELLO ON U'R SCREEN.TELL ME WHY & TELL ME PROCEDURE HOW IT PRINT USING COUT IN VC++

tell me sources or sites from where i can get detail inormation about ss7 protocol

1.
int *f()
{
int *m=(int *)malloc(2);
return m;
}
WHY THIS POINTER TO INT TREATED AS A GLOBAL VARIABLE.
2.can a...

//FROM MY SIDE
HELLO DEAR fflush() FUNCTION BUFFERED THE OUTPUT STREAM NOT INPUT STREAM.SO,U'R COMMENT IS NOT TECHNICALLY CORRECT.PLS REPLY ME SOON.

EXplain me about these function

cin.clear();
cin.ignore();

tell me what function i use for flushing a input bufer in c and c++;

void main()
{
int i=1;
printf("%d,%d,%d",i++,i++,i++);
}
output
3,2,1

CAN SOMEONRE EXPLAIN ME WHY?

consider the following statement & tell me why it i undetermined or
ambigious

int i=9;
i=i++;

PLS EXPLAIN ME FULLY

LOOK THE FOLLOWING STATEMENT

int *p[]();

PLS TELL ME THE MEANING OF THIS STATEMENT.& WHERE WE USE THIS STATEMENT.

CONSIDER THE FOLLOWING CODE:

int *p[];
// THIS IS ARRAY OF POINTERS
int (*p)[]
// THIS IS POINTER TO ARRAY.
CAN SOMEONE EXPLAIN ME SOME MORE ABOUT THESE TWO...

void main()
{
fork();
fork();
printf("main");
}

pls explain me what is the output.
how it comes.

LOOK THE FOLLOWING CODE:
void main()
{
char a[]={'a','b','c',d'};
int b[]={1,2,3,4,5};
printf("%d %d",&a[3]-a,&b[3]-b};
}
OUTPUT:
3 3

Look the following code:
struct emp
{
CASE :1
struct emp p; //ERROR
CASE :2
struct emp *k; //IT WILL WORK
};
WHY IT IS WORKING IN CASE :2 and not in CASE :2....

Look the Following Code....
struct emp
{
// CASE :1
struct emp a;// IT WILL GIVE THE ERROR
// CASE :2
struct emp *a;//IT IS COMPILED SUCCESFULLY
}
WHY
CASE :1 is error & CASE :2 is...

I am trying to use my virtual terminal for accesing Internet named as TELNET
under Dos.But Every time when we want to connect or open a site giving it gives the message
Could open a...