How to access or modify the const variable in c ?

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Question Posted / leossk

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How to access or modify the const variable in c ?..

Answer / skp

@Answer #7 - Answer of #6 is correct.

In Dev C++ the output is as answer #6.

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0 Yes

2 No

How to access or modify the const variable in c ?..

Answer / ramya

const int x = 10;
int *ptr = &x;
*ptr = 20;
printf ("Value of x is %d\n", x);

Even though the variable x is const the value gets changed..
And its one of the drawback in c..

Is This Answer Correct ?

28 Yes

31 No

How to access or modify the const variable in c ?..

Answer / raj

@Ans No #9

Actually we are here discuss about how to modify value
store in the constant variable.
I don't more ,but i think in the last we have value of 'z'
same as before corrupted.

please reply me if any one have the answer of this question.

Is it possible or not??

Thanks

Is This Answer Correct ?

2 Yes

8 No

How to access or modify the const variable in c ?..

Answer / santhi

we can access the constant variable in c through the
functions which are declared as constant.

Is This Answer Correct ?

13 Yes

22 No

How to access or modify the const variable in c ?..

Answer / samrat

You can modify the const variable in C by using pointers.

#include <stdio.h>

int main()
{
const int val = 20;
printf("Value is: %d\n", val);
int *ptr =(int*)&val;
*ptr = 2000;
printf("Value is: %d\n", val);
return 0;
}

Output

Value is: 20
Value is: 2000

Is This Answer Correct ?

13 Yes

28 No

How to access or modify the const variable in c ?..

Answer / vignesh

@Ramya
const value cannot be changed...you declared it wrong,

int *ptr = &x;

is not correct.It should be,

int ptr = &x;

also,according to your program only the *ptr value is 20 and
not the value of x

Is This Answer Correct ?

5 Yes

51 No

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