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C Structures Interview Questions
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 Structure 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 structure to make your MNC interview very easy.
C Structures Interview Questions and Answers
16.What will be the output of the C program?
#include<stdio.h>
int main()
{
enum numbers{num1, num2 = 0, num3, num4, num5, num6}n;
printf("%d\n", sizeof(n));
}
x
Option: C
Explanation
The size of enum is not the influence of the values in the enumeration. Enum can store integer values. So, the size of enum is also equal to the size of int. Rarely, the size of enum may differ between compilers.
17.What will be the output of the C program?
#include<stdio.h>
int main()
{
enum week{sun = -1, mon, tue, wed, thu = 5, fri, sat};
printf("%d %d %d %d %d %d %d", sun, mon, tue, wed, thu, fri, sat);
return 0;
}
x
Option: B
Explanation
Enumeration accepts both positive and negative integer constants.
18.What will be the output of the C program?
#include<stdio.h>
int main()
{
struct alphabets
{
char firstLetter;
struct alphabets a;
}al;
al.firstLetter = 'a';
printf("%c", al.firstLetter);
}
x
Option: D
Explanation
Undefined Structure 'alphabets'
We can't declare structure members within the same structure.
19.What will be the output of the C program?
#include<stdio.h>
int main()
{
struct check
{
}ck;
printf("%d", sizeof(ck));
}
x
Option: B
Explanation
The size of an empty structure that without having any members will occupies 1 byte.
20.What will be the output of the C program?
#include<stdio.h>
int main()
{
struct check
{
int i:0;
}ck;
printf("%d", sizeof(ck));
}
x
Option: C
Explanation
Bit fields should be greater than 0. As the same for array, array element must have greater than 0 elements. If you declare array like this arr[0] will show you the error message.
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