Pointers Questions and Answers updated daily – C Language



12 Pointers Questions and answers section with explanation for various online exam preparation, various interviews, C Language Pointers online test. Pointers Questions with detailed description, explanation will help you to master the topic.

Pointers Questions

1.
   What will be the output of the program ?

#include

int main()
{
    char *str;
    str = "%s";
    printf(str, "Kn");
    return 0;
}



SHOW ANSWER
Correct Ans:k
Explanation:


2.
    What will be the output of the program ?

#include

int main()
{
    char str[20] = "Hello";
    char *const p=str;
    *p='M';
    printf("%sn", str);
    return 0;
}



SHOW ANSWER
Correct Ans:mello
Explanation:


3.
      What will be the output of the program ?

#include

int main()
{
    int i=3, *j, k;
    j = &i;
    printf("%dn", i**j*i+*j);
    return 0;
}



Fresherslive Current Affairs

SHOW ANSWER
Correct Ans:30
Explanation:


4.
What will be the output of the program ?

#include<stdio.h>

int main()
{
    static char *s[] = {"black", "white", "pink", "violet"};
    char **ptr[] = {s+3, s+2, s+1, s}, ***p;
    p = ptr;
    ++p;
    printf("%s", **p+1);
    return 0;
}



SHOW ANSWER
Correct Ans:ink
Explanation:


5. The operator used to get value at address stored in a pointer variable is



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SHOW ANSWER
Correct Ans:*
Explanation:


6.      A pointer is



SHOW ANSWER
Correct Ans:A variable that stores address of other variable
Explanation:


7. What would be the equivalent pointer expression for referring the array element a[i][j][k][l]



SHOW ANSWER
Correct Ans:*(*(*(*(a+i)+j)+k)+l)
Explanation:


8. If a variable is a pointer to a structure, then which of the following operator is used to access data members of the structure through the pointer variable?



SHOW ANSWER
Correct Ans:->
Explanation:


9. How many bytes are occupied by near, far and huge pointers (DOS)?



SHOW ANSWER
Correct Ans:near=2 far=4 huge=4
Explanation:
near=2, far=4 and huge=4 pointers exist only under DOS. Under windows and Linux every pointers is 4 bytes long.


10. In which header file is the NULL macro defined?



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SHOW ANSWER
Correct Ans:stdio.h and stddef.h
Explanation:
The macro "NULL" is defined in locale.h, stddef.h, stdio.h, stdlib.h, string.h, time.h, and wchar.h.


11.
Can you combine the following two statements into one?

char *p;
p = (char*) malloc(100);



SHOW ANSWER
Correct Ans:char *p = (char*)malloc(100);
Explanation:


12.    What is (void*)0?



SHOW ANSWER
Correct Ans:Representation of NULL pointer
Explanation:


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