LLucent Placement Paper -: Programming Questions And Answers

LLucent Previous Years Solved Sample Placement Papers

1. main()
   {
   {
   unsigned int bit=256;
   printf("%d", bit);
   }
   {
   unsigned int bit=512;
   printf("%d", bit);
   }
   }
   

   a. 256, 256

   b. 512, 512

   c. 256, 512 Ans: c. 256, 512

   d. Compile error

2. main()
   {
   int i;
   for(i=0;i<5;i++)
   {
   printf("%d\n", 1L << i);
   }
   }
   

   a. 5, 4, 3, 2, 1

   b. 0, 1, 2, 3, 4

   c. 0, 1, 2, 4, 8

   d. 1, 2, 4, 8, 16 Ans: d. 1, 2, 4, 8, 16

3. main()
   {
   signed int bit=512, i=5;
   for(;i;i--)
   {
   printf("%d\n", bit = (bit >> (i - (i -1))));
   }
   }
   

   a. 512, 256, 128, 64, 32

   b. 256, 128, 64, 32, 16

   c. 128, 64, 32, 16, 8

   d. 64, 32, 16, 8, 4 Ans: d. 64, 32, 16, 8, 4

4. main()
   {
   signed int bit=512, i=5;
   for(;i;i--)
   {
   printf("%d\n", bit >> (i - (i -1)));
   }
   }
   

   a. 512, 256, 0, 0, 0

   b. 256, 256, 0, 0, 0

   c. 512, 512, 512, 512, 512

   d. 256, 256, 256, 256, 256 Ans: d. 256, 256, 256, 256, 256

5. main()
   {
   if (!(1&&0))
   {
   printf("OK I am done.");
   }
   else
   {
   printf("OK I am gone.");
   }
   }
   

   a. OK I am done Ans: a. OK I am done

   b. OK I am gone

   c. compile error

   d. none of the above

6. main()
   {
   if ((1||0) && (0||1))
   {
   printf("OK I am done.");
   }
   else
   {
   printf("OK I am gone.");
   }
   }
   

   a. OK I am done Ans: a. OK I am done

   b. OK I am gone

   c. compile error

   d. none of the above

7. main()
   {
   signed int bit=512, mBit;
   {
   mBit = ~bit;
   bit = bit & ~bit ;
   printf("%d %d", bit, mBit);
   }
   }
   

   a. 0, 0

   b. 0, 513

   c. 512, 0

   d. 0, -513 Ans: d. 0, -513

8. main()
   {
   int i;
   printf("%d", &i)+1;
   scanf("%d", i)-1;
   }
   

   a. Runtime error.

   b. Runtime error. Access violation.

   c. Compile error. Illegal syntax Ans: c. Compile error. Illegal syntax

   d. None of the above

9. main(int argc, char *argv[])
   {
   (main && argc) ? main(argc-1, NULL) : return 0;
   }
   

   a. Runtime error.

   b. Compile error. Illegal syntax Ans: b. Compile error. Illegal syntax

   c. Gets into Infinite loop

   d. None of the above

10. main()
    {
    int i;
    float *pf;
    pf = (float *)&i;
    *pf = 100.00;
    printf("%d", i);
    }
    

    a. Runtime error.

    b. 100

    c. Some Integer not 100 Ans: c. Some Integer not 100

    d. None of the above

11. main()
    {
    int i = 0xff;
    printf("%d", i<<2);
    }
    

    a. 4

    b. 512

    c. 1020

    d. 1024 Ans: d. 1024

12. #define SQR(x) x * x
    main()
    {
    printf("%d", 225/SQR(15));
    }
    

    a. 1

    b. 225

    c. 15

    d. none of the above Ans: d. none of the above

13. union u
    {
    struct st
    {
    int i : 4;
    int j : 4;
    int k : 4;
    int l;
    } st;
    int i;
    } u;
    main()
    {
    u.i = 100;
    printf("%d, %d, %d", u.i, u.st.i, u.st.l);
    }
    

    a. 4, 4, 0

    b. 0, 0, 0

    c. 100, 4, 0 Ans: c. 100, 4, 0

    d. 40, 4, 0