MCQ based on array and string

1.

      What is right way to Initialize array?

A.int num[6] = { 2, 4, 12, 5, 45, 5 };

B.int n{} = { 2, 4, 12, 5, 45, 5 };

C.int n{6} = { 2, 4, 12 };

D.int n(6) = { 2, 4, 12, 5, 45, 5 };

ans:- A

2.

What will be the output of the program ?

#include<stdio.h>
void main()
{
    int a[5] = {5, 1, 15, 20, 25};
    int i, j, m;
    i = ++a[1];
    j = a[1]++;
    m = a[i++];
    printf("%d, %d, %d", i, j, m);
}

A.3, 2, 15

B.2, 3, 20

C.2, 1, 15

D.1, 2, 5

ans:- A

3.

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.6

C.9

D.Error

E.None of the above

ans:- C

4.

An array elements are always stored in ________ memory locations.

A.Sequential

B.Random

C.Sequential and Random

D.None of the above

ans:- A

5.

Let x be an array. Which of the following operations are 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

E.III and IV

ans:- D

6.

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

D.0

E.None of these

ans:- D

7.

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

ans:- B

8.

Array passed as an argument to a function is interpreted as

A.Address of the array.

B.Values of the first elements of the array.

C.Address of the first element of the array.

D.Number of element of the array.

ans:-C

9.

What will be the output of the program if the array begins at 65472 and each integer occupies 2 bytes?

#include
void main()
{
    int a[3][4] = {1, 2, 3, 4, 4, 3, 2, 1, 7, 8, 9, 0};
    printf("%u, %u", a+1, &a+1);
}

A.65474, 65488

B.65480, 65488

C.65480, 65496

D.65474, 65476

E.None of these

ams:- C

10.

What will be the output of the program ?

#include<stdio.h>
int main()
{
    int arr[1] = {10};
    printf("%d", 0[arr]);
    return 0;
}

A.1

B.0

C.10

D.6

E.None of these

ans:- C

11.

If the two strings are identical, then strcmp() function returns

A.1

B.0

C.-1

D.true

E.None of these

ans:- B

12.

The library function used to find the last occurrence of a character in a string is

A.laststr()

B.strstr()

C.strnstr()

D.strrchr()

E.None of these

ans:-D

13.

Which of the following function is used to find the first occurrence of a given string in another string?

A.strchr()

B.strrchr()

C.strstr()

D.strnset()

E.None of these

ans:- C

14.

What will be the output of the program ?

#include<stdio.h>
#include<string.h>
void main()
{
    char str1[20] = "Hello", str2[20] = " World";
    printf("%s", strcpy(str2, strcat(str1, str2)));
}

A.Hello World

B.World

C.WorldHello

D.Hello

E.None of these

ans:-A

15.

What will be the output of the program ?

#include<stdio.h>
void main()
{
    printf(5+"Good Morningn");
}

A.Good Morning

B.M

C.Good

D.Morning

E.None of these

ans:- D

16.

What will be the output of the program ?

#include<stdio.h>
void main()
{
    printf(5+"Good Morningn");
}

A.Good Morning

B.M

C.Good

D.Morning

E.None of these

ans:- D

17.

Which of the following correctly accesses the seventh element stored in arr, an array with 100 elements?

A.arr[6]

B.arr[7]

C.arr{6}

D.arr{7}

E.None of these

ans:- A

18.

What will be the correct output of the following program?

#include<string.h>
void main()
{
   char str[] = "C EXAMINATION", rev[17];
   int i = strlen(str), j=0;
   for( ; i>=0; rev[j++] = str[i--])
   rev[j] =  str[j] ;
   puts(rev);
}

A.NOITANIMAXE C

B.NOITANIMAXE

C.C

D.No output at all.

E.Syntax error

ans:- D

19.

String concatenation means -

A.Combining two strings.

B.Extracting a substring out of a string.

C.Partitioning the string into two strings.

D.Merging two strings.

E.Comparing the two strings to define the larger one.

ans:- A

27.

What will be the output of the program ?

#include
#include
void main()
{
    char str[] = "Exam\0Veda";
    printf("%s", str);
}

A.Exam

B.Exam Veda

C.Exam\0Veda

D.Veda

E.None of these

ans:- A