Data Structure MCQ Test Quiz!
Looking for an interesting way to learn about data structure? Data structure is quite a difficult concept to grasp, as you can see from this quiz. Don't worry; with determination, this quiz will be helpful to you. For this quiz, you need to know the output of the code given, what an integer is, determine the program's production, and compile-time error. This quiz will be challenging, but you can do it. Go for it.
- 1.What is the output of the code given below? #include void main() { int arr[] = {10, 20, 30, 40, 50, 60}; int *ptr1 = arr; int *ptr2 = arr + 6; printf("Number of Elements : %d", (ptr2 - ptr1)); printf("Number of Bytes : %d", (char*)ptr2 - (char*) ptr1); }
- A.
Number of Elements : 5 Number of Bytes: 20
- B.
Number of Elements : 6 Number of Bytes: 24
- C.
Compile Time Error
- D.
Run Time Error
- 2.What will be the output of the program ? 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
- 3.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
- 4.Consider a two dimensional array int A[100][100]; // assume that an integer requires 4 bytes. Starting address of the array is 5000 What is the address of the element A[4][5] if the allocation is row major ?
- A.
Address cannot be determined
- B.
5080
- C.
6620
- D.
6120
- 5.What is the output of the code given below? #include void main() { float arr[5] = {12.5, 10.0, 13.5, 90.5, 0.5}; float *ptr1 = &arr[0]; float *ptr2 = ptr1 + 3; printf("%f ", *ptr2); printf("%d", ptr2 - ptr1);}
- A.
90.500000 3
- B.
90.500000 12
- C.
10.000000 12
- D.
0.500000 3
- 6.What will be the output of the program if the array begins at 65486 and each integer occupies 2 bytes? #include int main() { int arr[] = {12, 14, 15, 23, 45}; printf("%u, %u", arr+1, &arr+1); return 0; }
- A.
65488, 65490
- B.
64490, 65492
- C.
65488, 65496
- D.
64490, 65498
- 7.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", *(*(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
- 8.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", **p); }
- A.
1
- B.
2
- C.
3
- D.
4
- 9.What is the output of the code given below? # include void fun(int *ptr) { *ptr = 30; } int main() { int y = 20; fun(&y); printf("%d", y); }
- A.
20
- B.
30
- C.
Compile Time error
- D.
Run Time error
- 10.What is the output of the code given below? #include void main() { char *s= "hello"; char *p = s; printf("%c\t%c", *(p + 3), s[1]); }
- A.
H e
- B.
L l
- C.
L o
- D.
L e
Questions: 5 | Attempts: 7325 | Last updated: Feb 11, 2013
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