Answer / vignesh1988i

const char *a : means the string is constant and the pointer
is not...

const char *a="HELLO WORLD" , if we take this example for
the whole scope of the program the string is constant and we
can't assign any other string to that pointer 'a'....

char * const a : means the pointer is constant (address) but
string is not......

char * const a="hello world" , if we take this example ,
here the address will be always constant.... string can vary..

char const *a : means string is a constant and pointer is
not..... as we have seen from the first example...


thank u

Answer / shaista naaz

char * a = "Hello world";
1)
we cannot make a[i] = 'Some character'. This is not allowed.
but we can make
a = "Hi world";
that is char * a is basically a is a pointer which can point
to different address like when we say
a = "Hello world" and then we say a = "Hi world";
Here a is pointing to different address bit as I said before
If we try a[i] = 'some char' will give compiler error as
because here the string is constant not pointer so this is
const char * a = a is a pointer which is pointing to a
constant string. This is a default behaviour.
2)
char * const a = "I am good" ;
Now here you cannot do any thing no modification allowed.
Try doing a[0] = 'Y';
it fails.
Try doing a = "You are good";
It fails too
Error is You cannot assign to a variable which is a constant.
So a is a variable which is a pointer to character and is
constant.
or a is a constant pointer to character.
3)
char const * a = const char *a
As in both the case a is a pointer to character which is
constant and a can point to different string but this string
itself cannot be modified. This is the default behavior of
char * a.

what is the output of the following code? main() { int I; I=0x10+010+10; printf("x=%x",I); } give detailed reason

3 Answers  

---

How can I convert integers to binary or hexadecimal?

2 Answers  

---

can we print any string without using terminator?

2 Answers   Infosys, TCS,

---

Find occurence of a character in a sting.

3 Answers   TCS,

---

What is the difference between typeof(foo) and myFoo.GetType()?

2 Answers   Synergy,

---

in any language the sound structure of that language depends on its a) character set, input/output function, its control structures b) character set, library functions, input/output functions its control structures c) character set, library functions, control sturctures d) character set, operators, its control structures

0 Answers  

---

what type of questions arrive in interview over c programming?

0 Answers  

---

Why isnt any of this standardized in c?

0 Answers  

---

What is the Lvalue and Rvalue?

2 Answers  

---

Do string constants represent numerical values?

0 Answers  

---

Explain how can you tell whether two strings are the same?

0 Answers  

---

diff .between strcture and union

2 Answers  

---