Array in C Language - Quiz

Q: What will be the output of following program code?


#include <stdio.h>
int main(void)
{
    char p;
    char buf[10] = {1, 2, 3, 4, 5, 6, 9, 8};
    p = (buf + 1)[5];
    printf("%d", p);
    return 0;
}

A. 5
B. 9
C. 6
D. error

Correct Option: B
Remarks:

Explanation: Option B

Q: An array elements are always stored in ________ memory locations.

A. Sequential
B. Random
C. Sequential and Random
D. None of the above

Correct Option: A
Remarks:

Explanation: <p>Answer: Option A </p> <p>An array in C or C++ is a collection of items stored at contiguous memory locations and elements can be accessed randomly using indices of an array. They are used to store similar type of elements as in the data type must be the same for all elements. They can be used to store collection of primitive data types such as int, float, double, char, etc of any particular type. To add to it, an array in C or C++ can store derived data types such as the structures, pointers etc.</p>

Q: let x be an array. Which of the following operations is illegal?

I.   ++x
II. x+1
III. x++
IV. x*2

A. I and II
B. I, II and III
C. II and III
D. I, III and IV

Correct Option: D
Remarks:

Explanation: Option D

Q: What is the maximum number of dimensions an array in C may have?

A. 2
B. 10
C. 20
D. Theoratically no limit. The only practical limits are memory size and compilers.

Correct Option: D
Remarks:

Explanation: Theoretically no limit. The only practical limits are memory size and compilers.

Q: Size of the array need not be specified, when

A. Initialization is a part of definition
B. It is a declaratrion
C. It is a formal parameter
D. All of these

Correct Option: D
Remarks:

Explanation: All of these

Q: What will be printed after execution of the following code?


void main()
{
      int arr[10] = {1,2,3,4,5};
      printf("%d", arr[5]);
}

A. Garbage Value
B. 5
C. 6

Correct Option: D
Remarks:

Explanation: Option D

Q: What will be the output of the following program?


void main()
{
      char str1[] = "abcd";
      char str2[] = "abcd";
      if(str1==str2)
            printf("Equal");
      else
            printf("Unequal");
}

A. Equal
B. Unequal
C. Error
D. None of these.

Correct Option: B
Remarks:

Explanation: Unequal

Q: What will be the output of the following code?


void main()
{
      int a[10];
      printf("%d %d", a[-1], a[12]);
}

A. 0 0
B. Garbage value 0
C. 0 Garbage Value
D. Garbage vlaue Garbage Value

Correct Option: D
Remarks:

Explanation: Garbage vlaue Garbage Value

Q: What does the following declaration mean? int (*ptr)[10];

A. ptr is array of pointers to 10 integers
B. ptr is a pointer to an array of 10 integers
C. ptr is an array of 10 integers
D. ptr is an pointer to array

Correct Option: B
Remarks:

Explanation: ptr is a pointer to an array of 10 integers

Q: Which of the following statements are correct about the program below?


#include<stdio.h>
void main()
{
    int size, i;
    scanf("%d", &size);
    int arr[size];
    for(i=1; i<=size; i++)
    {
        scanf("%d", arr[i]);
        printf("%d", arr[i]);
    }
}

A. The code is erroneous since the statement declaring array is invalid.
B. The code is erroneous since the subscript for array used in for loop is in the range 1 to size.
C. The code is correct and runs successfully.
D. The code is erroneous since the values of array are getting scanned through the loop.

Correct Option: A
Remarks:

Explanation: The code is erroneous since the statement declaring array is invalid.

Array in C Language - Quiz

What will be the output of following program code? #include <stdio.h> int main(void) { char p; char buf[10] = {1, 2, 3, 4, 5, 6, 9, 8}; p = (buf + 1)[5]; printf("%d", p); return 0; }

An array elements are always stored in ________ memory locations.

let x be an array. Which of the following operations is illegal? I. ++x II. x+1 III. x++ IV. x*2

What is the maximum number of dimensions an array in C may have?

Size of the array need not be specified, when

What will be printed after execution of the following code? void main() { int arr[10] = {1,2,3,4,5}; printf("%d", arr[5]); }

What will be the output of the following program? void main() { char str1[] = "abcd"; char str2[] = "abcd"; if(str1==str2) printf("Equal"); else printf("Unequal"); }

What will be the output of the following code? void main() { int a[10]; printf("%d %d", a[-1], a[12]); }

What does the following declaration mean? int (*ptr)[10];

Which of the following statements are correct about the program below? #include<stdio.h> void main() { int size, i; scanf("%d", &size); int arr[size]; for(i=1; i<=size; i++) { scanf("%d", arr[i]); printf("%d", arr[i]); } }

What will be the output of following program code?

let x be an array. Which of the following operations is illegal?
I. ++x II. x+1 III. x++ IV. x*2

What will be printed after execution of the following code?

What will be the output of the following program?

What will be the output of the following code?

Which of the following statements are correct about the program below?