Arrays and Strings(1st)

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;
}

1 Mark(s)

None of the above
5
Error
6
9

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

1 Mark(s)

strchr()
strrchr()
strnset()
strstr()
None of these

What will be the output of the program ?

#include
void main()
{
    float arr[] = {12.4, 2.3, 4.5, 6.7};
    printf("%d", sizeof(arr)/sizeof(arr[0]));
}

1 Mark(s)

None of these
6
5
7
4

An array elements are always stored in ________ memory locations.

1 Mark(s)

Sequential and Random
None of the above
Sequential
Random

Size of the array need not be specified, when

1 Mark(s)

It is a formal parameter
It is a declaratrion
Initialization is a part of definition
All of these

What is the return value of the following statement if it is placed in C program? strcmp("ABC", "ABC");

1 Mark(s)

Compilation Error
1
33
0
-1

Which of the following is correct way to define the function fun() in the below program?

#include<stdio.h>
void main()
{
    int a[3][4];
    fun(a);
}

1 Mark(s)

None of these
void fun(int *p[4]){}
void fun(int p[][4]){}
void fun(int *p[3][4]){}
void fun(int *p[][4]){}

Which of the following statements are correct about an array?
1. The array int num[26]; can store 26 elements.
2. The expression num[1] designates the very first element in the array.
3. It is necessary to initialize the array at the time of declaration.
4. The declaration num[SIZE] is allowed if SIZE is a macro.

1 Mark(s)

2, 4
2, 3
1, 4
1
None of these

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

1 Mark(s)

ptr is array of pointers to 10 integers
ptr is an pointer to array
ptr is a pointer to an array of 10 integers
ptr is an array of 10 integers

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

1 Mark(s)

Theoratically no limit. The only practical limits are memory size and compilers.
2
50
8
20

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

1 Mark(s)

I and II
II and III
I, III and IV
I, II and III
III and IV

What will be the output of the program ?

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

1 Mark(s)

Veda
Exam Veda 4
Exam Veda
None of these
Exam

Which of the following function is more appropriate for reading in a multi-word string?

1 Mark(s)

gets()
scanf()
None of these
printf()
puts()

What will be the output of the program ?

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

1 Mark(s)

10
None of these
0
6
1

Consider the following type definition.

typedef char x[10];
x myArray[5];

What will sizeof(myArray) be ? (Assume one character occupies 1 byte)

1 Mark(s)

30
15
None of these
10
50

int a[5] = {1,2,3}
What is the value of a[4]?

1 Mark(s)

1
Garbage Value
2
3
0

What will be the output of the program if the array begins at address 65486?

#include
void main()
{
    int arr[] = {12, 14, 15, 23, 45};
    printf("%u, %u", arr, &arr);
}

1 Mark(s)

65486, 65487
65486, 65486
65486, 65490
None of these
65486, 65488

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);
}

1 Mark(s)

None of these
65480, 65496
65474, 65488
65480, 65488
65474, 65476

What will be the output of the program ?

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

1 Mark(s)

None of these
M
Morning
Good
Good Morning

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)));
}

1 Mark(s)

WorldHello
None of these
World
Hello
Hello World

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");
}

1 Mark(s)

Error
None of these.
Unequal
Equal

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

1 Mark(s)

arr[7]
arr[6]
arr{7}
arr{6}
None of these

What is right way to Initialize array?

1 Mark(s)

int n(6) = { 2, 4, 12, 5, 45, 5 };
int n{} = { 2, 4, 12, 5, 45, 5 };
int n{6} = { 2, 4, 12 };
int num[6] = { 2, 4, 12, 5, 45, 5 };

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]);
    }
}

1 Mark(s)

The code is correct and runs successfully.
The code is erroneous since the subscript for array used in for loop is in the range 1 to size.
The code is erroneous since the values of array are getting scanned through the loop.
The code is erroneous since the statement declaring array is invalid.
None of these

Array passed as an argument to a function is interpreted as

1 Mark(s)

Address of the array
Values of the first elements of the array.
Number of element of the array.
Address of the first element of the array.

The function sprintf() works like printf(), but operates on ..........

1 Mark(s)

stdin
stderr
no such function in 'C'.
string
Data file

What will be printed after execution of the following code?

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

1 Mark(s)

Garbage Value
6
5
0
None of these

String concatenation means -

1 Mark(s)

Extracting a substring out of a string.
Merging two strings.
Combining two strings.
Partitioning the string into two strings.
Comparing the two strings to define the larger one.

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

1 Mark(s)

0
1
-1
true
None of these

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);
}

1 Mark(s)

2, 3, 20
3, 2, 15
1, 2, 5
2, 1, 15

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] = '�';
   puts(rev);
}

1 Mark(s)

NOITANIMAXE C
No output at all.
NOITANIMAXE
Syntax error
C

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

1 Mark(s)

strnstr()
laststr()
None of these
strrchr()
strstr()

What will be the output of the following code?

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

1 Mark(s)

0 0
Garbage vlaue Garbage Value
Code will not compile
Garbage value 0
0 Garbage Value

Arrays and Strings(1st) : Question 1 of 33