Explore topic-wise MCQs in C Program.

This section includes 27 Mcqs, each offering curated multiple-choice questions to sharpen your C Program knowledge and support exam preparation. Choose a topic below to get started.

1.

char *ptr;char myString[] = "abcdefg";ptr = myString;ptr += 5;what string does ptr point to in the sample code above?~!

A. fg
B. efg
C. defg
D. cdefg
E. bcdefg
Answer» B. efg
Discussion
2.

char* myfunc(char *ptr){ ptr+=3; return(ptr);}void main(){ char *x, *y; x = "EXAMVEDA"; y = myfunc(x); printf("y=%s", y);}What will be printed when the sample code above is executed?~!

A. y=EXAMVEDA
B. y=AMVEDA
C. y=MVEDA
D. y=VEDA
E. y=EDA
Answer» D. y=VEDA
Discussion
3.

*$_A function 'p' that accepts a pointer to a character as argument and returns a pointer to an array of integer can be declared as?

A. int(*p(char *))[]
B. int *p(char *)[]
C. int (*p) (char *)[]
D. None of these.
Answer» B. int *p(char *)[]
Discussion
4.

*/*_What will be the output?main() { char *p; p = "Hello"; printf("%cn",*&*p); }?

A. Hello
B. H
C. Some address will be printed
D. None of these.
Answer» C. Some address will be printed
Discussion
5.

%_#includevoid main(){ int *ptr, a=10; ptr = &a; *ptr += 1; printf("%d, %d", *ptr, a);}_%

A. 10, 10
B. 10, 11
C. 11, 10
D. 11, 11
Answer» E.
Discussion
6.

_ Comment on the following pointer declaration?int *ptr, p;$?

A. ptr is a pointer to integer, p is not.
B. ptr and p, both are pointers to integer.
C. ptr is pointer to integer, p may or may not be.
D. ptr and p both are not pointers to integer.
Answer» B. ptr and p, both are pointers to integer.
Discussion
7.

_Comment on the following?const int *ptr;$?

A. We cannot change the value pointed by ptr.
B. We cannot change the pointer ptr itself.
C. Both of the above
D. We can change the pointer as well as the value pointed by it.
Answer» B. We cannot change the pointer ptr itself.
Discussion
8.

_Choose the best answer.Prior to using a pointer variable$?

A. It should be declared.
B. It should be initialized.
C. It should be both declared and initialized.
D. None of these.
Answer» D. None of these.
Discussion
9.

The declarationint (*p) [5];means?

A. p is one dimensional array of size 5, of pointers to integers.
B. p is a pointer to a 5 elements integer array.
C. The same as int *p[
D. None of these.
Answer» C. The same as int *p[
Discussion
10.

Determine Output:main(){ char *str1 = "abcd"; char str2[] = "abcd"; printf("%d %d %d", sizeof(str1), sizeof(str2), sizeof("abcd"));}

A. 2 5 5
B. 2 4 4
C. 8 5 5
D. 2 4 5
Answer» D. 2 4 5
Discussion
11.

The operator > and < are meaningful when used with pointers, if

A. The pointers point to data of similar type.
B. The pointers point to structure of similar data type.
C. The pointers point to elements of the same array.
D. None of these.
Answer» D. None of these.
Discussion
12.

Determine Output:void main(){ char far *farther, *farthest; printf("%d..%d", sizeof(farther), sizeof(farthest));}

A. 4..2
B. 2..2
C. 4..4
D. 2..4
Answer» B. 2..2
Discussion
13.

What will be the output of the following program code?#includevoid main(){ int i = 10; void *p = &i; printf("%f", *(float *)p);}

A. Error
B. 10
C. 0.000000
D. None of these.
Answer» D. None of these.
Discussion
14.

What will be the output of the following program?#includevoid main(){ int i = 10; void *p = &i; printf("%d\n", (int)*p);}

A. Compiler time error
B. Segmentation fault/runtime crash
C. 10
D. Undefined behavior
Answer» B. Segmentation fault/runtime crash
Discussion
15.

The statement int **a;

A. is illegal
B. is legal but meaningless
C. is syntactically and semantically correct
D. None of these.
Answer» D. None of these.
Discussion
16.

The address operator &, cannot act on

A. R-values
B. Arithmetic expressions
C. Both of the above
D. Local variables
E. Members of a structure
Answer» D. Local variables
Discussion
17.

Determine output:#include void main(){ char *p = NULL; char *q = 0; if(p) printf(" p "); else printf("nullp"); if(q) printf("q"); else printf(" nullq");}

A. p q
B. Depends on the compiler
C. x nullq where x can be p or nullp depending on the value of NULL
D. nullp nullq
Answer» E.
Discussion
18.

Find the output of the following program.void main(){ int array[10]; int *i = &array[2], *j = &array[5]; int diff = j-i; printf("%d", diff);}

A. 3
B. 6
C. Garbage value
D. Error
Answer» B. 6
Discussion
19.

Find the output of the following program.void main(){ char *msg = "hi"; printf(msg);}

A. hi
B. h
C. hi followed by garbage value
D. Error
E. Garbage Value
Answer» B. h
Discussion
20.

Which of the following is the correct way of declaring a float pointer:

A. float ptr;
B. float *ptr;
C. *float ptr;
D. None of the above
Answer» C. *float ptr;
Discussion
21.

What will be the output of the following program code?#include void main(){ int i=3, *j, **k; j = &i; k = &j; printf("%d%d%d", *j, **k, *(*k));}

A. 444
B. 000
C. 333
D. 433
E. Garbage Value
Answer» D. 433
Discussion
22.

What will be printed after compiling and running the following code?main() { char *p; printf("%d %d",sizeof(*p), sizeof(p));}

A. 1 1
B. 1 2
C. 2 1
D. 2 2
Answer» C. 2 1
Discussion
23.

What would be the output for the following Turbo C code?#includevoid main(){ int a[]={ 1, 2, 3, 4, 5 }, *p; p=a; ++*p; printf("%d ", *p); p += 2; printf("%d", *p);}

A. 2 4
B. 3 4
C. 2 2
D. 2 3
E. 3 3
Answer» E. 3 3
Discussion
24.

What is the base data type of a pointer variable by which the memory would be allocated to it?

A. int
B. float
C. No data type
D. Depends upon the type of the variable to which it is pointing.
E. unsigned int
Answer» F.
Discussion
25.

Which of the following statements are true after execution of the program.void main(){ int a[10], i, *p; a[0] = 1; a[1] = 2; p = a; (*p)++;}

A. a[1] = 3
B. a[0] = 2
C. a[1] = 2
D. a[0] = 3
E. Compilation error
Answer» C. a[1] = 2
Discussion
26.

Find the output of the following program.void main(){ int i=10; /* assume address of i is 0x1234ABCD */ int *ip=&i; int **ipp=&&i; printf("%x,%x,%x", &i, ip, *ipp); }

A. 0x1234ABCD, 0x1234ABCD, 10
B. 0x1234ABCD, 0x1234ABCD, 0x1234ABCD
C. 0x1234ABCD, 10, 10
D. Syntax error
E. Runtime error
Answer» E. Runtime error
Discussion
27.

Find the output of the following program.void main(){ printf("%d, %d", sizeof(int *), sizeof(int **));}

A. 2, 0
B. 0, 2
C. 2, 2
D. 2, 4
E. 4, 4
Answer» D. 2, 4
Discussion