Explore topic-wise MCQs in C Programming.

This section includes 93 Mcqs, each offering curated multiple-choice questions to sharpen your C Programming knowledge and support exam preparation. Choose a topic below to get started.

51.

What is the default value of byte, short, int or long data type elements of an array in Java?

A. -1
B. 1
C. 0
D. Garbage value
Answer» D. Garbage value
Discussion
52.

What is the default value of an element of Object type array?

A. 0
B. null
C. -1
D. Garbage value
Answer» C. -1
Discussion
53.

Lazy initialization of array requires the keyword "new" to allocate memory to the array and its elements. State TRUE or FALSE.

A. FALSE
B. TRUE
C. -
D. -
Answer» C. -
Discussion
54.

Shorthand array initialization in Java needs the keyword "new" to allocate memory to the array and elements. State TRUE or FALSE.

A. FALSE
B. TRUE
C. -
D. -
Answer» B. TRUE
Discussion
55.

The name of an array variable or identifier can start with ___.

A. A letter
B. Underscore ( _ )
C. Dollar Symbol ($)
D. All
Answer» E.
Discussion
56.

An array in Java can be declared only of some predefined types. (TRUE/FALSE)

A. FALSE
B. TRUE
C. -
D. -
Answer» B. TRUE
Discussion
57.

If an index of an element is N, what is its actual position in the array?

A. N-1
B. N
C. N+1
D. N+2
Answer» D. N+2
Discussion
58.

We should not specify the array size if declaration and initialization are done at the same time. (TRUE / FALSE)

A. FALSE
B. TRUE
C. -
D. -
Answer» C. -
Discussion
59.

What is the output of the below Java program with arrays?

A. RED
B. YELLOW
C. WHITE
D. Compiler error
Answer» E.
Discussion
60.

Which is the correct way of knowing Array Size in Java?

A. //int[] ary;
B. //int[] ary;
C. //int[] ary;
D. //int[] ary;
Answer» C. //int[] ary;
Discussion
61.

What is the output of the below Java code snippet?

A. 0
B. -1
C. 1
D. Compiler error
Answer» B. -1
Discussion
62.

What is the output of the below Java program?

A. 2,65
B. 3,95
C. 3,65
D. Compiler error
Answer» D. Compiler error
Discussion
63.

What is the output of the below Java code snippet with arrays?

A. 0
B. null
C. Compiler error
D. Runtime Exception - Null Pointer Exception
Answer» E.
Discussion
64.

In Java, an array can be declared without initialization without mentioning the size. (TRUE / FALSE)

A. TRUE
B. FALSE
C. -
D. -
Answer» B. FALSE
Discussion
65.

It is possible to skip initializing some elements of the array during Shorthand Initialization. (TRUE / FALSE)

A. FALSE
B. TRUE
C. -
D. -
Answer» B. TRUE
Discussion
66.

Which are the special symbols used to initialize an array at the time of the declaration itself?

A. Parentheses ( )
B. Square Brackets [ ]
C. Braces { }
D. Angled Brackets < >
Answer» D. Angled Brackets < >
Discussion
67.

Which are the special symbols used to declare an array in Java?

A. Braces { }
B. Parentheses ()
C. Square Brackets [ ]
D. Angled Brackets < >
Answer» D. Angled Brackets < >
Discussion
68.

In Java language, an array index starts with ___.

A. -1
B. 0
C. 1
D. Any integer
Answer» C. 1
Discussion
69.

An array declaration in Java without initialization ___ memory.

A. Does not allocate
B. Allocates memory
C. -
D. -
Answer» B. Allocates memory
Discussion
70.

Unlike C-Arrays, the Java-Arrays have ___.

A. Names
B. Values
C. Methods and Fields
D. None
Answer» D. None
Discussion
71.

The Java Virtual Machine (JVM) implements arrays as ___ type.

A. Primitive
B. Object
C. -
D. -
Answer» C. -
Discussion
72.

An Array in Java is a collection of elements of ___ data type.

A. Same
B. Different
C. -
D. -
Answer» B. Different
Discussion
73.

What will be the output of the program ? #include int main() { int arr[1]={10}; printf("%d\n", 0[arr]); return 0; }

A. 1
B. 10
C. 0
D. 6
Answer» C. 0
Discussion
74.

What will be the output of the program ? #include int main() { float arr[] = {12.4, 2.3, 4.5, 6.7}; printf("%d\n", sizeof(arr)/sizeof(arr[0])); return 0; }

A. 5
B. 4
C. 6
D. 7
Answer» C. 6
Discussion
75.

What will be the output of the program in Turb C (under DOS)? #include int main() { int arr[5], i=0; while(i<5) arr[i]=++i; for(i=0; i<5; i++) printf("%d, ", arr[i]); return 0; }

A. 1, 2, 3, 4, 5,
B. Garbage value, 1, 2, 3, 4,
C. 0, 1, 2, 3, 4,
D. 2, 3, 4, 5, 6,
Answer» C. 0, 1, 2, 3, 4,
Discussion
76.

What will be the output of the program if the array begins at address 65486? #include int main() { int arr[] = {12, 14, 15, 23, 45}; printf("%u, %u\n", arr, &arr); return 0; }

A. 65486, 65488
B. 65486, 65486
C. 65486, 65490
D. 65486, 65487
Answer» C. 65486, 65490
Discussion
77.

What will be the output of the program ? #include int main() { static int arr[] = {0, 1, 2, 3, 4}; int *p[] = {arr, arr+1, arr+2, arr+3, arr+4}; int **ptr=p; ptr++; printf("%d, %d, %d\n", ptr-p, *ptr-arr, **ptr); *ptr++; printf("%d, %d, %d\n", ptr-p, *ptr-arr, **ptr); *++ptr; printf("%d, %d, %d\n", ptr-p, *ptr-arr, **ptr); ++*ptr; printf("%d, %d, %d\n", ptr-p, *ptr-arr, **ptr); return 0; }

A. 0, 0, 01, 1, 12, 2, 23, 3, 3
B. 1, 1, 22, 2, 33, 3, 44, 4, 1
C. 1, 1, 12, 2, 23, 3, 33, 4, 4
D. 0, 1, 21, 2, 32, 3, 43, 4, 5
Answer» D. 0, 1, 21, 2, 32, 3, 43, 4, 5
Discussion
78.

Which of the following statements are correct about an array? 1: The array int num[26]; can store 26 elements. 2: The expression num[1] designates the very first element in the array. 3: It is necessary to initialize the array at the time of declaration. 4: The declaration num[SIZE] is allowed if SIZE is a macro.

A. 1
B. 1,4
C. 2,3
D. 2,4
Answer» C. 2,3
Discussion
79.

What will be the output of the program ? #include int main() { static int a[2][2] = {1, 2, 3, 4}; int i, j; static int *p[] = {(int*)a, (int*)a+1, (int*)a+2}; for(i=0; i<2; i++) { for(j=0; j<2; j++) { printf("%d, %d, %d, %d\n", *(*(p+i)+j), *(*(j+p)+i), *(*(i+p)+j), *(*(p+j)+i)); } } return 0; }

A. 1, 1, 1, 12, 3, 2, 33, 2, 3, 24, 4, 4, 4
B. 1, 2, 1, 22, 3, 2, 33, 4, 3, 44, 2, 4, 2
C. 1, 1, 1, 12, 2, 2, 22, 2, 2, 23, 3, 3, 3
D. 1, 2, 3, 42, 3, 4, 13, 4, 1, 24, 1, 2, 3
Answer» D. 1, 2, 3, 42, 3, 4, 13, 4, 1, 24, 1, 2, 3
Discussion
80.

Which of the following statements are correct about 6 used in the program? int num[6];num[6]=21;

A. In the first statement 6 specifies a particular element, whereas in the second statement it specifies a type.
B. In the first statement 6 specifies a array size, whereas in the second statement it specifies a particular element of array.
C. In the first statement 6 specifies a particular element, whereas in the second statement it specifies a array size.
D. In both the statement 6 specifies array size.
Answer» C. In the first statement 6 specifies a particular element, whereas in the second statement it specifies a array size.
Discussion
81.

Does this mentioning array name gives the base address in all the contexts?

A. Yes
B. No
Answer» C.
Discussion
82.

Which of the following statements are correct about the program below? #include int main() { int size, i; scanf("%d", &size); int arr[size]; for(i=1; i<=size; i++) { scanf("%d", arr[i]); printf("%d", arr[i]); } return 0; }

A. The code is erroneous since the subscript for array used in for loop is in the range 1 to size.
B. The code is erroneous since the values of array are getting scanned through the loop.
C. The code is erroneous since the statement declaring array is invalid.
D. The code is correct and runs successfully.
Answer» D. The code is correct and runs successfully.
Discussion
83.

What will be the output of the program if the array begins 1200 in memory? #include int main() { int arr[]={2, 3, 4, 1, 6}; printf("%u, %u, %u\n", arr, &arr[0], &arr); return 0; }

A. 1200, 1202, 1204
B. 1200, 1200, 1200
C. 1200, 1204, 1208
D. 1200, 1202, 1200
Answer» C. 1200, 1204, 1208
Discussion
84.

Is there any difference int the following declarations? int fun(int arr[]);int fun(int arr[2]);

A. Yes
B. No
Answer» C.
Discussion
85.

Which of the following statements mentioning the name of the array begins DOES NOT yield the base address? 1: When array name is used with the sizeof operator. 2: When array name is operand of the & operator. 3: When array name is passed to scanf() function. 4: When array name is passed to printf() function.

A. A
B. A, B
C. B
D. B, D
Answer» C. B
Discussion
86.

Are the expressions arr and &arr same for an array of 10 integers?

A. Yes
B. No
Answer» C.
Discussion
87.

What will be the output of the program if the array begins at 65472 and each integer occupies 2 bytes? #include int main() { int a[3][4] = {1, 2, 3, 4, 4, 3, 2, 1, 7, 8, 9, 0}; printf("%u, %u\n", a+1, &a+1); return 0; }

A. 65474, 65476
B. 65480, 65496
C. 65480, 65488
D. 65474, 65488
Answer» C. 65480, 65488
Discussion
88.

What will be the output of the program ? #include int main() { void fun(int, int[]); int arr[] = {1, 2, 3, 4}; int i; fun(4, arr); for(i=0; i<4; i++) printf("%d,", arr[i]); return 0; } void fun(int n, int arr[]) { int *p=0; int i=0; while(i++ < n) p = &arr[i]; *p=0; }

A. 2, 3, 4, 5
B. 1, 2, 3, 4
C. 0, 1, 2, 3
D. 3, 2, 1 0
Answer» C. 0, 1, 2, 3
Discussion
89.

What will be the output of the program ? #include void fun(int **p); int main() { int a[3][4] = {1, 2, 3, 4, 4, 3, 2, 8, 7, 8, 9, 0}; int *ptr; ptr = &a[0][0]; fun(&ptr); return 0; } void fun(int **p) { printf("%d\n", **p); }

A. 1
B. 2
C. 3
D. 4
Answer» B. 2
Discussion
90.

Which of the following is correct way to define the function fun() in the below program? #include int main() { int a[3][4]; fun(a); return 0; }

A. void fun(int p[][4]) { }
B. void fun(int *p[4]) { }
C. void fun(int *p[][4]) { }
D. void fun(int *p[3][4]) { }
Answer» B. void fun(int *p[4]) { }
Discussion
91.

A pointer to a block of memory is effectively same as an array

A. 1
B.
C. Yes
D. No
Answer» B.
Discussion
92.

What does the following declaration mean? int (*ptr)[10];

A. ptr is array of pointers to 10 integers
B. ptr is a pointer to an array of 10 integers
C. ptr is an array of 10 integers
D. ptr is an pointer to array
Answer» C. ptr is an array of 10 integers
Discussion
93.

What will be the output of the program ? #include int main() { int a[5] = {5, 1, 15, 20, 25}; int i, j, m; i = ++a[1]; j = a[1]++; m = a[i++]; printf("%d, %d, %d", i, j, m); return 0; }

A. 2, 1, 15
B. 1, 2, 5
C. 3, 2, 15
D. 2, 3, 20
Answer» D. 2, 3, 20
Discussion