Placement Papers - HP

HP Paper C & Unix
 
Question Consist of 4 parts. Duration of exam is 60 min.
 
 ? C -
? C++
? Unix-15Q
? Apptitude

  C And C++
 
 1. i=23, j=4, c=0;
c=i++-++j;
o/p?

 2. #define CUBE(x) x*x*x
#define MUL3(x,y) 3*x*y
#define ADD(x) x+y
some statement maikng use of the preprocessors defined above............find o/p.

 3. virtual destructors r used for ?
 
 4.  2 questions on friend functions & classes

 5.  char c[]="123456789";
i=4;
printf("%c %c", c[i], i[c]);
o/p?
one more question on these lines.

6. int *ptr;
p=0;
p++;
printf("%u", p);
o/p?
 a. 0             b. garbage value             c. 4             d.  none of the above

  7.  double i=0.0;
switch(i)
{
case 0.0:
printf("jgdj");
case 1.0:
printf("ptoy");
break;
default:
printf("hdfv");
}
o/p?

 8.  volatile int i;
in d above statement, is "volatile"
a. a type declaration b. type qualifier c. storage class d. none of the above

  Unix
 
 1. "bash" is a kind of shell in UNIX
 
 2. primitive flavours of unix
Options :  a. BSD &Sys V b. LINUX & BSD c..

 3. which of the folllowing is used 4 redirection in UNIX? >, |, <, ^
 
 4. wot is d UNIX terminology 4 multi-tasking?
 a. time slicing
 b. pre-emptive .......
 c. time division
 d.......

 5. In UNIX if You try accessing a directory for which u dont have permission, wot message is displayed?
 a. permission denied
 b. invalid user
 c. access denied
 d.........