[SOLVED] What is wrong in this code?

[agg_mayur]

int main()
{

char *p;
*p = 'D';
printf("%c\n",*p);
return 0;
}

 

[nikhilele]

what error you are getting..

 

[coolmirza143]

code seems to be ok!!

Post the error which you are getting....

 

[agg_mayur]

If i am running this code in Turbo C it is just running fine and output comes.
When i am running this code in Visual C++, it is not showing any error but nothing is coming on output.

---------- Post added at 10:57 ---------- Previous post was at 10:57 ----------

what error you are getting..

If i am running this code in Turbo C it is just running fine and output comes.
When i am running this code in Visual C++, it is not showing any error but nothing is coming on output.

 

[ckshivaram]

Does the black screen come and vanish....

if that is the case then you need to give sleep or delay so that you can see the output window/

 

[FvM]

The code is "wrong" and must be expected to cause an exception, because you are writing to an undefined memory location by using an uninitialized pointer. A popular C programming error, I think.

 

[agg_mayur]

The code is "wrong" and must be expected to cause an exception, because you are writing to an undefined memory location by using an uninitialized pointer. A popular C programming error, I think.

When i am running it in a Turbo C it is not giving any error and it gives the output, while in Visual C++ it is creating problem.
I have to give some address to the pointer.

 

[FvM]

The code may execute in some cases, but is incorrect anyway.

int main()
{
char c;
char *p;
p=&c;
*p = 'D';
printf("%c\n",*p);
return 0;
}

 

[alexan_e]

I think it will also work if you allocate a memory space

int main()
{
char *p = malloc(sizeof(char));
*p = 'D';
printf("%c\n",*p);
return 0;
}

Alex

 

[nikhilele]

or you can directly write
char *p = 'D';

 

[agg_mayur]

The code may execute in some cases, but is incorrect anyway.

int main()
{
char c;
char *p;
p=&c;
*p = 'D';
printf("%c\n",*p);
return 0;
}

This code is working, here pointer pointer p is pointing to the base address of c.

 

[FvM]

Yes, incorrect means the original code. I won't suggest a correction that doesn't work.