logo

CuriousTab

CuriousTab

Discussion

Home ‣ C Programming ‣ Declarations and Initializations Comments
  • Question

  • 1 : typedef long a;
    extern int a c;
    2 : typedef long a;
    extern a int c;
    3 : typedef long a;
    extern a c;


  • Options
  • A. 1 correct
  • B. 2 correct
  • C. 3 correct
  • D. 1, 2, 3 are correct

  • Correct Answer
  • 3 correct 

    Explanation
    typedef long a;
    extern int a c;     while compiling this statement becomes extern int long c;. This will result in to "Declaration syntax error".

    typedef long a;
    extern a int c;     while compiling this statement becomes extern long int c;. This will result in to "Too many types in declaration error".

    typedef long a;
    extern a c;     while compiling this statement becomes extern long c;. This is a valid c declaration statement. It says variable c is long data type and defined in some other file or module.

    So, Option C is the correct answer.

    Declarations and Initializations problems

    Search Results

    • 1. Which of the structure is incorrcet?

      1 : 
      struct aa
{
    int a;
    float b;
};
      2 : 
      struct aa
{
    int a;
    float b;
    struct aa var;
};
      3 : 
      struct aa
{
    int a;
    float b;
    struct aa *var;
};

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 1, 2, 3
      • Discuss
    • 2. What is the output of the program? 
      #include<stdio.h>
int main()
{
    union a
    {
        int i;
        char ch[2];
    };
    union a u;
    u.ch[0] = 3;
    u.ch[1] = 2;
    printf("%d, %d, %d\n", u.ch[0], u.ch[1], u.i);
    return 0;
}

    • Options
    • A. 3, 2, 515
    • B. 515, 2, 3
    • C. 3, 2, 5
    • D. None of these
      • Discuss
    • 3. What will be the output of the program? 
      #include<stdio.h>
int main()
{
    int X=40;
    {
        int X=20;
        printf("%d ", X);
    }
    printf("%d\n", X);
    return 0;
}

    • Options
    • A. 40 40
    • B. 20 40
    • C. 20
    • D. Error
      • Discuss
    • 4. What is the output of the program 
      #include<stdio.h>
int main()
{
    struct emp
    {
        char name[20];
        int age;
        float sal;
    };
    struct emp e = {"Tiger"};
    printf("%d, %f\n", e.age, e.sal);
    return 0;
}

    • Options
    • A. 0, 0.000000
    • B. Garbage values
    • C. Error
    • D. None of above
      • Discuss
    • 5. What is the output of the program 
      #include<stdio.h>
int main()
{
    int x = 10, y = 20, z = 5, i;
    i = x < y < z;
    printf("%d\n", i);
    return 0;
}

    • Options
    • A. 0
    • B. 1
    • C. Error
    • D. None of these
      • Discuss
    • 6. Which of the following operations are INCORRECT?

    • Options
    • A. 
      int i = 35; i = i%5;
    • B. 
      short int j = 255; j = j;
    • C. 
      long int k = 365L; k = k;
    • D. 
      float a = 3.14; a = a%3;
      • Discuss
    • 7. Which of the structure is correct?

      1 : 
      struct book
{
    char name[10];
    float price;
    int pages;
};
      2 : 
      struct aa
{
    char name[10];
    float price;
    int pages;
}
      3 : 
      struct aa
{
    char name[10];
    float price;
    int pages;
}

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. All of above
      • Discuss
    • 8. Which of the declaration is correct?

    • Options
    • A. int length;
    • B. char int;
    • C. int long;
    • D. float double;
      • Discuss
    • 9. Which of the following correctly represents a long double constant?

    • Options
    • A. 6.68
    • B. 6.68L
    • C. 6.68f
    • D. 6.68LF
      • Discuss
    • 10. If the definition of the external variable occurs in the source file before its use in a particular function, then there is no need for an extern declaration in the function.

    • Options
    • A. True
    • B. False
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.