Re: [twincling] simple C code

[Saifi Khan]

On Sat, 18 Jul 2009, Mukund Deshpande wrote:

 Hi uma,
 
 #include stdio.h
 
 int main(int argc, char *argv[]) {
 int *a;
 int **b;
 int *c;
 
 c = (int *)a;
 b = c;
 
 return 0;
 }
 
 This seems to work why?
 
 thanks,
 
 SMS
 
 On Sat, Jul 18, 2009 at 2:01 PM, uma u...@twincling.org wrote:
 
 
 
  Hi Saifi,
 
  The following line should give compiler error
  b = (int *)a;
 
  '' operator expects operand immediately, but not typecast operator or any
  other expression.
 
  It could be corrected as:
 
 
  #include stdio.h
 
  int main(int argc, char *argv[]) {
  char *a;
  int **b;
  int *c;
 
  c = (int *)a;
  b = c;
 
  return 0;
  }
 
  But the operation is not portable.
 
  thanks,
  uma..
 
  On Sat, Jul 18, 2009 at 10:06 AM, Saifi Khan 
  saifi.k...@twincling.orgsaifi.khan%40twincling.org
  wrote:
 
   Hi all:
  
   Here is a simple C code.
  
   #include stdio.h
  
   int main(int argc, char *argv[])
   {
   char *a;
  
   int **b;
  
   b = (int *)a;
  
   return 0;
   }
  
  
   --
   any issues with this piece of code ?
  
  
   thanks
   Saifi.
  
 

I. compiling with gcc

lval.c: In function 'main':
lval.c:9: error: lvalue required as unary '' operand


II. compiling with clang/llvm

lval.c:9:9: error: address expression must be an lvalue or a function designator
b = (int *)a; 
^
1 diagnostic generated.


thanks
Saifi.

Re: [twincling] simple C code

[uma]

Hi Saifi,

The following line should give compiler error
   b = (int *)a;

'' operator expects operand immediately, but not typecast operator or any
other expression.

It could be corrected as:

#include stdio.h

int main(int argc, char *argv[]) {
char *a;
int **b;
int *c;

c = (int *)a;
b = c;

return 0;
}

But the operation is not portable.

thanks,
uma..

On Sat, Jul 18, 2009 at 10:06 AM, Saifi Khan saifi.k...@twincling.orgwrote:

 Hi all:

 Here is a simple C code.

 #include stdio.h

 int main(int argc, char *argv[])
 {
char *a;

int **b;

b = (int *)a;

return 0;
 }


 --
 any issues with this piece of code ?


 thanks
 Saifi.



[Non-text portions of this message have been removed]

Re: [twincling] simple C code

[Mukund Deshpande]

Hi uma,

#include stdio.h

int main(int argc, char *argv[]) {
int *a;
int **b;
int *c;

c = (int *)a;
b = c;

return 0;
}

This seems to work why?

thanks,

SMS

On Sat, Jul 18, 2009 at 2:01 PM, uma u...@twincling.org wrote:



 Hi Saifi,

 The following line should give compiler error
 b = (int *)a;

 '' operator expects operand immediately, but not typecast operator or any
 other expression.

 It could be corrected as:


 #include stdio.h

 int main(int argc, char *argv[]) {
 char *a;
 int **b;
 int *c;

 c = (int *)a;
 b = c;

 return 0;
 }

 But the operation is not portable.

 thanks,
 uma..

 On Sat, Jul 18, 2009 at 10:06 AM, Saifi Khan 
 saifi.k...@twincling.orgsaifi.khan%40twincling.org
 wrote:

  Hi all:
 
  Here is a simple C code.
 
  #include stdio.h
 
  int main(int argc, char *argv[])
  {
  char *a;
 
  int **b;
 
  b = (int *)a;
 
  return 0;
  }
 
 
  --
  any issues with this piece of code ?
 
 
  thanks
  Saifi.
 

 [Non-text portions of this message have been removed]

  



[Non-text portions of this message have been removed]