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How to access or modify the const variable in c ?
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Answer / skp
@Answer #7 - Answer of #6 is correct.
In Dev C++ the output is as answer #6.
| Is This Answer Correct ? | 0 Yes | 2 No |
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 |
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 |
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 |
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 |
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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