Pointers - C Questions
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C Pointer Tricky 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 pointers 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 pointers to make your MNC interview very easy.
Pointer Tricky Questions
6. What will be the output of the C program?
#include<stdio.h>
int main()
{
char *ptr = "helloworld";
printf(ptr + 4);
return 0;
}
x
Option: A
Explanation
Here the characters in string "helloworld" is placed in address as follows. ptr +4 tells the compiler to start reading from 4th place of a string "Helloworld".
| Character | address |
|---|---|
| h | 4214784 |
| e | 4214785 |
| l | 4214786 |
| l | 4214787 |
| o | 4214788 |
| w | 4214789 |
| o | 4214790 |
| r | 4214791 |
| l | 4214792 |
| d | 4214793 |
7. What will be the output of the C program?
#include<stdio.h>
int main()
{
char *ptr = "2braces.com";
printf("%c\n",*&*ptr);
return 0;
}
x
Option: C
Explanation
In pointer, address operator and Multiplication operator are always cancel each other. Thus *&*ptr = *ptr.
8. What will be the output of the C program?
#include<stdio.h>
#include<string.h>
int main(){
register a = 1;
int far *ptr;
ptr = &a;
printf("%u",ptr);
return 0;
}
x
Option: D
Explanation
"a" is a register variable which holds a value 1. It must be noted that variable a hold its value 1 in a register but not in computer memory location thus the pointer variable ptr cannot hold the address of a.
9. What will be the output of the C program?
#include<stdio.h>
#include<string.h>
int main(){
char a = 30, b = 5;
char *p = &a, *q = &b;
printf("%d", p - q);
return 0;
}
x
Option: A
Explanation
Difference between any two variables of same data type are always one.
10. What will be the output of the C program?
#include<stdio.h>
int main(){
int *ptr, b;
b = sizeof(ptr);
printf("%d" , b);
return 0;
}
x
Option: B
Explanation
Since ptr is a pointer variable of integer data types.
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