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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;
}
x
Option: C
Explanation
array can't be declared in #define preprocessor.
22. What will be the output of the C program?
#include<stdio.h>
#define arr "abcd"
int main()
{
printf("%c", arr[2]);
return 0;
}
x
Option: A
Explanation
String can be declared in #define preprocessor.
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;
}
x
Option: C
Explanation
Watch clearly, arr[1] = {2}; is similar to
arr[1] = {2, '\0'};
Thus 0[arr] outputted 2
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✘
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.
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;
}
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--.
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