Pointers - C Questions

Pointers Questions - 1 Pointers Questions - 2 Pointers Questions - 3 Pointers Questions - 4 Pointers Questions - 5 Pointers Questions - 6 Pointers Questions - 7 Pointers Questions - 8

Data Types - C Questions

Data Types Questions - 1 Data Types Questions - 2 Data Types Questions - 3 Data Types Questions - 4 Data Types Questions - 5

Operators - C Questions

Operators Questions - 1 Operators Questions - 2 Operators Questions - 3 Operators Questions - 4 Operators Questions - 5

Structures - C Questions

Structures Questions - 1 Structures Questions - 2 Structures Questions - 3 Structures Questions - 4 Structures Questions - 5

Files - C Questions

Files Questions - 1 Files Questions - 2 Files Questions - 3 Files Questions - 4 Files Questions - 5

printf - C Questions

printf Questions - 1 printf Questions - 2 printf Questions - 3 printf Questions - 4 printf Questions - 5

Variables - C Questions

Variables Questions - 1 Variables Questions - 2 Variables Questions - 3 Variables Questions - 4 Variables Questions - 5

Preprocessor Macros

Preprocessor Macros - 1 Preprocessor Macros - 2 Preprocessor Macros - 3 Preprocessor Macros - 4 Preprocessor Macros - 5

While Loop - C Questions

While Loop Questions - 1 While Loop Questions - 2 While Loop Questions - 3 While Loop Questions - 4 While Loop Questions - 5

for Loop - C Questions

for Loop Questions - 1 for Loop Questions - 2 for Loop Questions - 3 for Loop Questions - 4 for Loop Questions - 5

if else - C Questions

if else Questions - 1 if else Questions - 2 if else Questions - 3 if else Questions - 4 if else Questions - 5

Switch case - C Questions

Switch case Questions - 1 Switch case Questions - 2 Switch case Questions - 3 Switch case Questions - 4 Switch case Questions - 5

Array - C Questions

Array Questions - 1 Array Questions - 2 Array Questions - 3 Array Questions - 4 Array Questions - 5

Functions - C Questions

Functions Questions - 1 Functions Questions - 2 Functions Questions - 3 Functions Questions - 4 Functions Questions - 5

Memory Allocation

Memory Allocation - 1 Memory Allocation - 2
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C Array Interview Questions and Answers

In most of the MNC interview questions such as in ZOHO interview question, IVTL Infoview interview questions, Amazon interview questions, GOOGLE interview questions, Infosys interview questions and even in Voonik interview questions, We come across several Tricky C Questions about which 2:5 of the questions are from Array in c. Solving that kind of tricky C questions is not an easy task for all C programmers. We need more practices to solve it with ease. So we provide 25+ interesting C questions in Array to make your MNC interview very easy.

C Array Questions

21. What will be the output of the C program?

#include<stdio.h>
#define arr[5] {1, 2, 3, 4, 5}
int main()
{
	printf("%d", arr[1]);
	return 0;
}

A. 1

B. 2

C. Compilation error

D. Runtime error

x

 

Option: C

Explanation

array can't be declared in #define preprocessor.

Answer


22. What will be the output of the C program?

#include<stdio.h>
#define arr "abcd"
int main()
{
	printf("%c", arr[2]);
	return 0;
}

A. c

B. b

C. Compilation error

D. Runtime error

x

 

Option: A

Explanation

String can be declared in #define preprocessor.

Answer


23. What will be the output of the C program?

#include<stdio.h>
int main()
{
	int arr[1] = {2};
	printf("%d", 0[arr]);
	return 0;
}

A. Compilation error

B. Some Garbage value

C. 2

D. 0

x

 

Option: C

Explanation

Watch clearly, arr[1] = {2}; is similar to
arr[1] = {2, '\0'};
Thus 0[arr] outputted 2

Answer


24. What will be the output of the C program?

#include<stdio.h>
void array(int **p);
int main()
{
	int arr[2][3] = {{3, 6, 9 }, {12, 15, 18}};
	int *ptr;
	ptr = &arr;
	array(&ptr);
	return 0;
}
void array(int **p)
{
	printf("%d", **p);
}

A. address of first element in array

B. 3

C. address of ptr

D. Runtime error

x

 

Option: B

Explanation

Here ptr = &arr.
i.e) ptr = address of first element in an array arr[2][3];
array(&ptr);
i.e) array(address of ptr);

Examine void array() funtion

void array(int **p)
i.e) void array(**(address of ptr))
i.e) void array(*(address of first element in an array arr[2][3]))
i.e) void array(value of first element in an array arr[2][3]);
i.e) void array(3)
printf("%d", **p);
i.e) printf("%d", 3);
Thus 3 is outputted.

Answer


25. What will be the output of the C program?

#include<stdio.h>
int main()
{
	int arr[3], i = 0;
	while(i < 3)
	{
		arr[i] = ++i;
	}
	for(i=0; i<3; i++)
	{
		printf("%d--", arr[i]);
	}
return 0;
}

A. Compilation error

B. 1--2--3--

C. Garbage value--1--2--

D. None of the above

x

 

Option: C

Explanation

Simply arr[0] is left while filling the numbers in array using while loop.
Thus arr[0] = garbage value;
arr[1] = 1;
arr[2] = 2;
Thus outputted Garbage value--1--2--.

Answer


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