void main()

{

char *cptr = 0?2000;

long *lptr = 0?2000;

cptr++;

lptr++;

printf(” %x %x”, cptr, lptr);

}Will it execute or not?

Answer1

For Q2: As above, won’t compile because main must return int. Also, 0×2000 cannot be implicitly converted to a pointer (I assume you meant 0×2000 and not 0?2000.)

Answer2

Not Excute.

Compile with VC7 results following errors:

error C2440: ‘initializing’ : cannot convert from ‘int’ to ‘char *’

error C2440: ‘initializing’ : cannot convert from ‘int’ to ‘long *’

Not Excute if it is C++, but Excute in C.

The printout:

2001 2004

Answer3

In C++

[$]> g++ point.c

point.c: In function `int main()’:

point.c:4: error: invalid conversion from `int’ to `char*’

point.c:5: error: invalid conversion from `int’ to `long int*’

in C

———————————–

[$] etc > gcc point.c

point.c: In function `main’:

point.c:4: warning: initialization makes pointer from integer without a cast

point.c:5: warning: initialization makes pointer from integer without a cast

[$] etc > ./a.exe

2001 2004