LG paper

1. main()
   {
   int i;
   printf("%d", &i)+1;
   scanf("%d", i)-1;
   }
   
   a. Runtime error.
   b. Runtime error. Access violation.
   c. Compile error. Illegal syntax
   d. None of the above
   

2. main(int argc, char *argv[])
   {
   (main && argc) ? main(argc-1, NULL) : return 0;
   }
   
   a. Runtime error.
   b. Compile error. Illegal syntax
   c. Gets into Infinite loop
   d. None of the above

3. main()
   {
   int i;
   float *pf;
   pf = (float *)&i;
   *pf = 100.00;
   printf("%d", i);
   }
   
   a. Runtime error.
   b. 100
   c. Some Integer not 100
   d. None of the above

4. main()
   {
   int i = 0xff;
   printf("%d", i<<2);
   }
   
   a. 4
   b. 512
   c. 1020
   d. 1024

5. #define SQR(x) x * x
   main()
   {
   printf("%d", 225/SQR(15));
   }
   
   a. 1
   b. 225
   c. 15
   d. none of the above

6. 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
   d. 40, 4, 0

7. union u
   {
   union u
   {
   int i;
   int j;
   }a[10];
   int b[10];
   }u;
   
   main()
   {
   printf("%d", sizeof(u));
   printf("%d", sizeof(u.a));
   printf("%d", sizeof(u.a[0].i));
   }
   a. 4, 4, 0
   b. 0, 0, 0
   c. 100, 4, 0
   d. 40, 4, 0

8. main()
   {
   int (*functable[2])(char *format, ...) ={printf, scanf};
   int i = 100;
   
   (*functable[0])("%d", i);
   (*functable[1])("%d", i);
   (*functable[1])("%d", i);
   (*functable[0])("%d", &i);
   }
   
   a. 100, Runtime error.
   b. 100, Random number, Random number, Random number.
   c. Compile error
   d. 100, Random number

9. main()
   {
   int i, j, *p;
   i = 25;
   j = 100;
   p = &i; /* Address of i is assigned to pointer p */
   printf("%f", i/(*p)); /* i is divided by pointer p */
   }
   
   a. Runtime error.
   b. 1.00000
   c. Compile error
   d. 0.00000

10. main()
    {
    int i, j;
    scanf("%d %d"+scanf("%d %d", &i, &j));
    printf("%d %d", i, j);
    }
    
    a. Runtime error.
    b. 0, 0
    c. Compile error
    d. the first two values entered by the user

11. main()
    {
    char *p = "hello world";
    p[0] = 'H';
    printf("%s", p);
    }
    
    a. Runtime error.
    b. “Hello world” c. Compile error
    d. “hello world”

12. main()
    {
    char * strA;
    char * strB = “I am OK”; memcpy( strA, strB, 6);
    }
    
    a. Runtime error.
    b. “I am OK” c. Compile error
    d. “I am O”

13. How will you print % character?
    a. printf(“\%”) b. printf(“\\%”) c. printf(“%%”) d. printf(“\%%”)

14. const int perplexed = 2;
    #define perplexed 3
    main()
    {
    #ifdef perplexed
    #undef perplexed
    #define perplexed 4
    #endif
    printf(“%d”,perplexed); }
    
    a. 0
    b. 2
    c. 4
    d. none of the above

15. struct Foo
    {
    char *pName;
    };
    
    main()
    {
    struct Foo *obj = malloc(sizeof(struct Foo));
    strcpy(obj->pName,"Your Name");
    printf("%s", obj->pName);
    }
    
    a. “Your Name” b. compile error
    c. “Name” d. Runtime error

16. struct Foo
    {
    char *pName;
    char *pAddress;
    };
    main()
    {
    struct Foo *obj = malloc(sizeof(struct Foo));
    obj->pName = malloc(100);
    obj->pAddress = malloc(100);
    strcpy(obj->pName,"Your Name");
    strcpy(obj->pAddress, "Your Address");
    free(obj);
    printf("%s", obj->pName);
    printf("%s", obj->pAddress);
    }
    
    a. “Your Name”, “Your Address” b. “Your Address”, “Your Address” c. “Your Name” “Your Name” d. None of the above

17. main()
    {
    char *a = "Hello ";
    char *b = "World";
    printf("%s", stract(a,b));
    }
    
    a. “Hello” b. “Hello World” c. “HelloWorld” d. None of the above

18. main()
    {
    char *a = "Hello ";
    char *b = "World";
    printf("%s", strcpy(a,b));
    }
    
    a. “Hello” b. “Hello World” c. “HelloWorld” d. None of the above

19. void func1(int (*a)[10])
    {
    printf("Ok it works");
    }
    
    void func2(int a[][10])
    {
    printf("Will this work?");
    }
    
    main()
    {
    int a[10][10];
    func1(a);
    func2(a);
    }
    
    a. “Ok it works” b. “Will this work?” c. “Ok it works Will this work?” d. None of the above

20. main()
    {
    printf("%d, %d", sizeof('c'), sizeof(100));
    }
    
    a. 2, 2
    b. 2, 100
    c. 4, 100
    d. 4, 4

21. main()
    {
    int i = 100;
    printf("%d", sizeof(sizeof(i)));
    }
    
    a. 2
    b. 100
    c. 4
    d. none of the above

22. main()
    {
    int c = 5;
    printf("%d", main|c);
    }
    
    a. 1
    b. 5
    c. 0
    d. none of the above

23. main()
    {
    char c;
    int i = 456;
    c = i;
    printf("%d", c);
    }
    
    a. 456
    b. -456
    c. random number
    d. none of the above

24. oid main ()
    {
    int x = 10;
    printf ("x = %d, y = %d", x,--x++);
    }
    
    a. 10, 10
    b. 10, 9
    c. 10, 11
    d. none of the above

25. main()
    {
    int i =10, j = 20;
    printf("%d, %d\n", j-- , --i);
    printf("%d, %d\n", j++ , ++i);
    }
    
    a. 20, 10, 20, 10
    b. 20, 9, 20, 10
    c. 20, 9, 19, 10
    d. 19, 9, 20, 10

26. main()
    {
    int x=5;
    for(;x==0;x--) {
    printf(“x=%d\n”, x--); }
    }
    a. 4, 3, 2, 1, 0
    b. 1, 2, 3, 4, 5
    c. 0, 1, 2, 3, 4
    d. none of the above

27. main()
    {
    int x=5;
    for(;x!=0;x--) {
    printf(“x=%d\n”, x--); }
    }
    a. 5, 4, 3, 2,1
    b. 4, 3, 2, 1, 0
    c. 5, 3, 1
    d. none of the above

28. main()
    {
    int x=5;
    {
    printf(“x=%d ”, x--); }
    }
    a. 5, 3, 1
    b. 5, 2, 1,
    c. 5, 3, 1, -1, 3
    d. –3, -1, 1, 3, 5

29. main()
    {
    unsigned int bit=256;
    printf(“%d”, bit); }
    {
    unsigned int bit=512;
    printf(“%d”, bit); }
    }
    
    a. 256, 256
    b. 512, 512
    c. 256, 512
    d. Compile error

30. 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

31. main()
    {
    signed int bit=512, i=5;
    
    for(;i;i--)
    {
    printf("%d\n", bit = (bit >> (i - (i -1))));
    }
    }
    512, 256, 128, 64, 32
    b. 256, 128, 64, 32, 16
    c. 128, 64, 32, 16, 8
    d. 64, 32, 16, 8, 4
    

32. 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

33. main()
    {
    if (!(1&&0))
    {
    printf("OK I am done.");
    }
    else
    {
    printf(“OK I am gone.”); }
    }
    
    a. OK I am done
    b. OK I am gone
    c. compile error
    d. none of the above

34. main()
    {
    if ((1||0) && (0||1))
    {
    printf("OK I am done.");
    }
    else
    {
    printf(“OK I am gone.”); }
    }
    
    a. OK I am done
    b. OK I am gone
    c. compile error
    d. none of the above

35. 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