C,C++ & Unix paper:

C,C++ & Unix paper:

C++ paper:

1. cin is an
   a.function
   b.object
   c.class.

2. what is the use of scope resolution operator?

3. advantage of inline function?

4. copy constructor is ans:call by value.

5. ques on vertual destructor?

6. inautix one ques?

7. one q’ on container class?

8. con’t remember the ques but the ans is Virtual base class

         C paper

1. How will u terminate the statement? ans: ;

2. select the wrong one
   a.a+=1;
   b.a*=2;
   c.a**=1;(ans)
   d.a>>=1;

3. main()
   {
   int n,i=1;
   switch(n)
   {
   case 1:
   some stuff;
   case 2:
   some stuff;
   default:
   i=10;
   }
   printf(“i=%d”,i);
   }
   what will be value of i; ans:non of the above

   4.pick ut the wrong one
   #typedef some stuff
   {
   —
   };

4. pick ut the wrong one
   #typedef some stuff
   {
   —
   };

5. one q’s on do loop?

6. pick the odd one
   a.malloc
   b.calloc
   c.new(ans)

7. char *ptr;
   p=malloc(20);
   How will u de allocate the memory?
   a.delete.
   b.free.

8. main()
   {
   char **p==”Hello”;
   printf(“%s”,**p);
   }Ans: Garbage or nothing

9. main()
   {
   printf(“%d%c\n”);
   printf(“%d%c\n”);
   }Ans: Garbage Value

10. main()
    {
    int x==5;
    printf(“%d%d”,x++,++x);
    }Ans==6 6

11.  main()
    {
    int x==4;
    printf(“%d”,printf(” %d %d “,x,x) );
    }Ans: 4 4 5

12. main()
    {
    union
    {
    int i;
    char p;
    struct
    {
    int t;
    char e;
    char o;
    };
    };
    printf(“%d\n”,sizeof(l) );
    }Ans: 4

13.  main()
    {
    int i==0,n==6;
    while(n–0);
    i+==n;
    printf(“%d\n”,i);
    }Ans: -1

14. main()
    {
    char a[]==”Hello”;
    printf(“%c\n”,*a++);
    }
    Ans: Error

15.  a=3,b=2,c=1;
    What’s the value of k?
    k=  a< b < c-1;
    Ans: 0

16. main()
    {
    int a==3;
    do
    {
    printf(“%d”, a);
    a= 1;
    } while(a0);
    }
    Ans: 3

17. It is not “exact” Question; But the given Answers is:
    a) PASS1 PASS2
    b) PASS1 FAIL1
    c)FAIL1 FAIL2
    d)FAIL1 PASS2
    main()
    {
    char c==-32;
    int i==-64;
    unsigned u==-26;
    if(ci)
    printf(“PASS1”);
    if( i < c)
    printf(“PASS2”);
    else
    printf(“FAIL1”);
    if(i<U)
    printf(“PASS2”);
    else
    printf(“FAIL2”);
    }Ans: PASS1 PASS2 PASS1

18. main()
    {
    int i==0;
    for( i==0; i<= ;i++)
    {
    switch(i)
    {
    case 0: i+==5;
    case 1: i+==2;
    case 2: i+==5;
    default: i+==4;
    break;
    }
    printf(“%d”,i);
    }
    Ans: 16 21

19. main()
    {
    int i==4;
    switch(i)
    {
    case 1:
    printf(“HEllo”):
    case default: // “case” should not come with “default”
    printf(“****”);
    }
    }
    Ans: Error

20. main()
    {
    int sum= 0,count;
    for(count= 1;sum+= count)
    printf(“%d\t”,sum);
    }
    Ans: Error

21. #define cond(a) a=e && a<=0
    main()
    {
    char s=’R’;
    if( cond(s) )
    printf(“UPPER CASE”);
    else
    printf(“LOWER CASE”);
    } Ans:UPPER CASE

22. .main()
    {
    static int i==5;
    printf(“%d\t”,i–);
    if( i)
    main();
    }Ans: 5 4 3 2 1

23. main()
    {
    char *a1==”new”,*a2==”dictionary”,*t;
    swap(a1,a2);
    printf(“(%s%s)”,a1,a2);
    t=¡;
    a1=¢;
    a2= t;
    printf(“-(%s%s)”,a1,a2);
    }
    swap( char *s1,char *s2)
    {
    char *temp;
    s1==s2;
    s2=s1;
    temp= s1;
    }
    Ans: (newdictionary)-(dictionarynew)

24.  main()
    {
    char *a1= “new”,*a2= “dictionary”,*t;
    swap(a1,a2);
    printf(“(%s%s)”,a1,a2);
    t=¡;
    a1=¢;
    a2=t;
    printf(“-(%s%s)”,a1,a2);
    }
    swap( char *s1,char *s2)
    {
    char *temp;
    s1= s2;
    s2= s1;
    temp= s1;
    }
    Ans: (newdictionary)-(dictionarynew)

25. main()
    {
    int a[]=={ 10,20,30,40,50};
    char*p==(char*)a;
    printf(“%d”, * ( (int *) p+4);
    }Ans: 50

             UNIX paper:

1.   How will u do version maintaince? sccs(source code control system)

2. a program in shell script? find the o/p.

3. awk $2

4. which signal u can’t catch?ans:sigkill

5. core dump is due to ?ans:segmentation fault.

6. .echo “todays date is ‘date'”; o/p = ?

7. process synchronisation is done by ?ans:s’phore

8. process synchronisation is done by ?ans:s’phore