Pointer - C Programming MCQ Questions and Answers Page-1 section-3

Section 1 Section 2 Section 3

What will be the output of the following C code?

#include <stdio.h>
void main()
{
    struct student
    {
        int no;
        char name[20];
    };
    struct student s;
    no = 8;
    printf("%d", no);
}

A. Nothing

B. Compile time error

C. Junk

D. 8

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2.
Which is an indirection operator among the following?

A. &

B. *

C. ->

D. .

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What will be the output of the following C code?

#include <stdio.h>
void main()
{
    char *a[10] = {"hi", "hello", "how"};
    int i = 0;
    for (i = 0;i < 10; i++)
    printf("%s", a[i]);
}

A. hi hello how Segmentation fault

B. hi hello how null

C. hey hello how Segmentation fault

D. hi hello how followed by 7 nulls

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What will be the output of the following C code?

#include <stdio.h>
void main()
{
    char *s= "hello";
    char *p = s + 2;
    printf("%c\t%c", *p, s[1]);
}

A. l e

B. h e

C. l l

D. h l

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What will be the output of the following C code?

#include <stdio.h>
void main()
{
    int k = 5;
    int *p = &k;
    int **m  = &p;
    printf("%d%d%d\n", k, *p, **p);
}

A. 5 5 5

B. 5 5 junk value

C. 5 junk junk

D. Compile time error

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What will be the output of the following C code?

#include <stdio.h>
void foo(int (*ary)[3]);
int main()
{
    int ary[2][3];
    foo(ary);
}
void foo(int (*ary)[3])
{
    int i = 10, j = 2, k;
    ary[0] = &i;
    ary[1] = &j;
    for (k = 0;k < 2; k++)
    printf("%d\n", *ary[k]);
}

A. Compile time error

B. 10 2

C. Undefined behaviour

D. segmentation fault/code crash

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What will be the output of the following C code?

#include <stdio.h>
int main()
{
    char *a[1] = {"hello"};
    printf("%s", a[0]);
    return 0;
}

A. Compile time error

B. hello

C. Undefined behaviour

D. hellon

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What does this declaration say?

int (*(*y)())[2];

A. y is pointer to the function which returns pointer to integer array

B. y is pointer to the function which returns array of pointers

C. y is function which returns function pointer which in turn returns pointer to integer array

D. y is function which returns array of integers

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What will be the output of the following C code?

#include <stdio.h>
int x = 0;
void main()
{
    int *const ptr = &x;
    printf("%p\n", ptr);
    ptr++;
    printf("%p\n ", ptr);
}

A. 0 1

B. Compile time error

C. 0xbfd605e8 0xbfd605ec

D. 0xbfd605e8 0xbfd605e8

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10.

Comment on the following declaration.

int (*ptr)(); // i)
char *ptr[]; // ii)

A. Both i) and ii) and cannot exist due to same name

B. i) is legal, ii) is illegal

C. i) is illegal, ii) is legal

D. Both i) and ii) will work legal and flawlessly

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1 2 3 4 5 6

1.
What will be the output of the following C code?

`#include <stdio.h> void main() { struct student { int no; char name[20]; }; struct student s; no = 8; printf("%d", no); }`

Answer & Solution

2.
Which is an indirection operator among the following?

Answer & Solution

3.
What will be the output of the following C code?

`#include <stdio.h> void main() { char *a[10] = {"hi", "hello", "how"}; int i = 0; for (i = 0;i < 10; i++) printf("%s", a[i]); }`

Answer & Solution

4.
What will be the output of the following C code?

`#include <stdio.h> void main() { char s= "hello"; char p = s + 2; printf("%c\t%c", *p, s[1]); }`

Answer & Solution

5.
What will be the output of the following C code?

`#include <stdio.h> void main() { int k = 5; int *p = &k; int **m = &p; printf("%d%d%d\n", k, *p, **p); }`

Answer & Solution

6.
What will be the output of the following C code?

`#include <stdio.h> void foo(int (ary)[3]); int main() { int ary[2][3]; foo(ary); } void foo(int (ary)[3]) { int i = 10, j = 2, k; ary[0] = &i; ary[1] = &j; for (k = 0;k < 2; k++) printf("%d\n", *ary[k]); }`

Answer & Solution

7.
What will be the output of the following C code?

`#include <stdio.h> int main() { char *a[1] = {"hello"}; printf("%s", a[0]); return 0; }`

Answer & Solution

8.
What does this declaration say?

`int ((y)())[2];`

Answer & Solution

9.
What will be the output of the following C code?

`#include <stdio.h> int x = 0; void main() { int *const ptr = &x; printf("%p\n", ptr); ptr++; printf("%p\n ", ptr); }`

Answer & Solution

10.
Comment on the following declaration.

`int (ptr)(); // i) char ptr[]; // ii)`

Answer & Solution

Read More Section(Pointer)

Pointer - C Programming MCQ Questions and Answers

1. What will be the output of the following C code? #include <stdio.h> void main() { struct student { int no; char name[20]; }; struct student s; no = 8; printf("%d", no); }

Answer & Solution

2. Which is an indirection operator among the following?

Answer & Solution

3. What will be the output of the following C code? #include <stdio.h> void main() { char *a[10] = {"hi", "hello", "how"}; int i = 0; for (i = 0;i < 10; i++) printf("%s", a[i]); }

Answer & Solution

4. What will be the output of the following C code? #include <stdio.h> void main() { char *s= "hello"; char *p = s + 2; printf("%c\t%c", *p, s[1]); }

Answer & Solution

5. What will be the output of the following C code? #include <stdio.h> void main() { int k = 5; int *p = &k; int **m = &p; printf("%d%d%d\n", k, *p, **p); }

Answer & Solution

6. What will be the output of the following C code? #include <stdio.h> void foo(int (*ary)[3]); int main() { int ary[2][3]; foo(ary); } void foo(int (*ary)[3]) { int i = 10, j = 2, k; ary[0] = &i; ary[1] = &j; for (k = 0;k < 2; k++) printf("%d\n", *ary[k]); }

Answer & Solution

7. What will be the output of the following C code? #include <stdio.h> int main() { char *a[1] = {"hello"}; printf("%s", a[0]); return 0; }

Answer & Solution

8. What does this declaration say? int (*(*y)())[2];

Answer & Solution

9. What will be the output of the following C code? #include <stdio.h> int x = 0; void main() { int *const ptr = &x; printf("%p\n", ptr); ptr++; printf("%p\n ", ptr); }

Answer & Solution

10. Comment on the following declaration. int (*ptr)(); // i) char *ptr[]; // ii)

Answer & Solution

Read More Section(Pointer)

1.
What will be the output of the following C code?

`#include <stdio.h> void main() { struct student { int no; char name[20]; }; struct student s; no = 8; printf("%d", no); }`

2.
Which is an indirection operator among the following?

3.
What will be the output of the following C code?

`#include <stdio.h> void main() { char *a[10] = {"hi", "hello", "how"}; int i = 0; for (i = 0;i < 10; i++) printf("%s", a[i]); }`

4.
What will be the output of the following C code?

`#include <stdio.h> void main() { char s= "hello"; char p = s + 2; printf("%c\t%c", *p, s[1]); }`

5.
What will be the output of the following C code?

`#include <stdio.h> void main() { int k = 5; int *p = &k; int **m = &p; printf("%d%d%d\n", k, *p, **p); }`

6.
What will be the output of the following C code?

`#include <stdio.h> void foo(int (ary)[3]); int main() { int ary[2][3]; foo(ary); } void foo(int (ary)[3]) { int i = 10, j = 2, k; ary[0] = &i; ary[1] = &j; for (k = 0;k < 2; k++) printf("%d\n", *ary[k]); }`

7.
What will be the output of the following C code?

`#include <stdio.h> int main() { char *a[1] = {"hello"}; printf("%s", a[0]); return 0; }`

8.
What does this declaration say?

`int ((y)())[2];`

9.
What will be the output of the following C code?

`#include <stdio.h> int x = 0; void main() { int *const ptr = &x; printf("%p\n", ptr); ptr++; printf("%p\n ", ptr); }`

10.
Comment on the following declaration.

`int (ptr)(); // i) char ptr[]; // ii)`