Quiz: C Programming Structure And Pointer! Trivia Questions Test

15 Questions | By Nauakrimilgai | Last updated: Mar 19, 2022 | Total Attempts: 380

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Quiz: C Programming Structure And Pointer! Trivia Questions Test - Quiz

C programming is one of the most popular programming languages, and over the week we got to cover much about C programming structure and pointers. Do you recall that a pointer is a variable which points to the address of another variable of any data type? Take up this test and get to see how much you recall from class.

Questions and Answers

1.

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?
- A.
  
  '.'
- B.
  
  '&'
- C.
  
  '*'
- D.
  
  '->'
2.

What will be the output of the program ? int main() { inti=3, *j, k; j = &i; printf("%d\n", i**j*i+*j); return0; }
- A.
  
  30
- B.
  
  27
- C.
  
  9
- D.
  
  3
3.

What will be the output of the program? int main() { void *vp; char ch=74, *cp="JACK"; int j=65; vp=&ch; printf("%c", *(char*)vp); vp=&j; printf("%c", *(int*)vp); vp=cp; printf("%s", (char*)vp+2); return 0; }
- A.
  
  JACK
- B.
  
  JCK
- C.
  
  J65K
- D.
  
  JAK
4.

What will be the output of the program ? int main() { inti, a[] = {2, 4, 6, 8, 10}; change(a, 5); for(i=0; i<=4; i++) printf("%d, ", a[i]); return 0; } change(int *b, int n) { int i; for(i=0; i<n; i++) *(b+1) = *(b+i)+5; }
- A.
  
  7, 9, 11, 13, 15
- B.
  
  2, 4, 6, 8, 10
- C.
  
  3, 1, -1, -3, -5
- D.
  
  2, 15, 6, 8, 10
5.

What will be the output of the program ? int main() { char *str; str = "%s"; printf(str, "K\n"); return 0; }
- A.
  
  Error
- B.
  
  K
- C.
  
  No Output
- D.
  
  %s
6.

Which of the following function is used to find the first occurrence of a given string in another string?
- A.
  
  Strchr()
- B.
  
  Strrchr()
- C.
  
  Strstr()
- D.
  
  Strnset()
7.

What will be the output of the program ? int main() { char p[] = "%d\n"; p[1] = 'c'; printf(p, 65); return 0; }
- A.
  
  A
- B.
  
  A
- C.
  
  65
- D.
  
  C
8.

Trace the output. int main() { char str[] = "basic"; char *s = str; printf("%s ", s++ +3); printf("%s",s); return 0; }
- A.
  
  C c
- B.
  
  Ic asic
- C.
  
  Asic sic
- D.
  
  C basic
9.

What would be the equivalent pointer expression for referring the array element a[i][j][k][l]
- A.
  
  ((((a+i)+j)+k)+l)
- B.
  
  (((a+i)+j)+k+l)
- C.
  
  *(*(*(*(a+i)+j)+k)+l)
- D.
  
  *((a+i)+j+k+l)
10.

What will be the output of the program ? int main() { int i; char a[] = "\0"; if(printf("%s", a)) printf("The string is empty\n"); else printf("The string is not empty\n"); return 0; }
- A.
  
  The string is empty
- B.
  
  The string is not empty
- C.
  
  No output
- D.
  
  0
11.

Are the expression *ptr++ and ++*ptr are same?
- A.
  
  True
- B.
  
  False
12.

If the size of integer is 4bytes, What will be the output of the program? int main() { int arr[] = {12, 13, 14, 15, 16}; printf("%d, %d, %d\n", sizeof(arr), sizeof(*arr), sizeof(arr[0])); return 0; }
- A.
  
  10, 2, 4
- B.
  
  20, 2, 2
- C.
  
  20, 4, 4
- D.
  
  16, 2, 2
13.

What will be the output of the program ? int main() { char str[] = "India\0\is Best\0"; printf("%d\n", strlen(str)); return 0; }
- A.
  
  10
- B.
  
  6
- C.
  
  5
- D.
  
  11
14.

What will be the output of the program ? int main() { printf(5+"Good Morning\n"); return 0; }
- A.
  
  M
- B.
  
  Morning
- C.
  
  Good Morning
- D.
  
  Good
15.

What will be the output of the program ? int main() { char str1[] = "Hello"; char str2[] = "Hello"; if(str1 == str2) printf("Equal\n"); else printf("Unequal\n"); return 0; }
- A.
  
  Equal
- B.
  
  Error
- C.
  
  Unequal
- D.
  
  None of above