Siemens Placement Paper -: Data Structures Questions With Answers

Siemens Previous Years Solved Sample Placement Papers

1. The prototype declaration for a pointer to a function which returns a pointer to an integer is:
   1. int (**pfi)();
   2. int (*)(*pfi)();
   3. (*int) pfi ();
   4. int * (*pfi)();

2.             main() {
                   static int a[20];
                   int i=0;
                   a[i]=i++;
                   printf("%d%d%d", a[0],a[i],i );
               }
               

   1. 0 0 0
   2. 0 0 1
   3. 1 1 1
   4. Error

3.             void f(int x,int &y) {
                   x++;
                   y++;
               }
               void main() {
                   int i=1,j=1;
                   f(i,j);
                   cout << i << j;
               }
               

   1. 1 1
   2. 1 2
   3. 2 1
   4. 2 2

4.             void main(void) {
                   FILE *p;
                   p=fopen("c:\\tc\\trial", "w");
                   if(!fp) {
                       exit(0);
                   }
                   fclose(p);
               }
               

   1. fopen() not used correctly
   2. path should be C:\\tc\\trial
   3. file pointer incorrect
   4. error

5.             void main(void) {
                   int y=128;
                   const int x=y;
                   printf("%d",x);
               }
               

   1. 128
   2. Garbage
   3. 0
   4. Error
6. When do preprocessor directives get executed:
   1. before compilation
   2. during compilation
   3. after compilation
   4. none
7. Which kind of function can access private data members:
   1. friend functions
   2. private member functions
   3. public member function
   4. all
8. Which of the following will be automatically generated by the compiler:
   1. default constructor,default destructor,copy constructor,assignment operator.
   2. Default constructor,copy constructor.
   3. Address operator,assignment operator
   4. B & C.
9. Difference between C++ struct and C++ class is:
   1. both are same.
   2. Struct defaults to public member access while class defaults to private member access.
   3. Struct defaults to public base class inheritance while class defaults to private base class inheritance.
   4. B & C.
10. Static member functions can access “this” pointer:
    1. true
    2. false
    3. compiler dependent
    4. none

11.             main() {
                    char arr[12];
                    printf("%d",sizeof(arr));
                }
                

    1. 24
    2. 12
    3. 36
    4. 2

12.             char *p;
                short i;
                long l;
                (long)i= l;
                

    1. both 1 & 2 are correct
    2. both 1 & 2 are incorrect
    3. Statement 1 is correct
    4. Statement 2 is correct

13.             main() {
                    int I;
                    I=010;
                    printf("%d",i);
                }
                

    1. 2
    2. 8
    3. 10
    4. 4

14.             main() {
                    const int val=5;
                    const int *ptrval;
                    ptrval=&val;
                    *ptrval=10;
                    printf("%d",val);
                }
                

    1. 5
    2. 10
    3. Garbage
    4. Error

15.             void main(void) {
                    int x=2;
                    int y=4;
                    cout << x++ << ++y << endl;
                    cout << x++ << y++;
                }
                

    1. 2 4
       3 4
    2. 3 3
       3 4
    3. 2 3
       2 4
    4. 2 3
       3 3