Arrays And Strings - Practice Test

[#1] Which of the following correctly accesses the seventh element stored in arr, an array with 100 elements?

(A) arr[6]

(B) arr[7]

(C) arr{6}

(D) arr{7}

Correct Answer

(A) arr[6]

Explanation

Solution: Array index always starts with 0.

[#2] int a [ 5 ] = { 1,2,3 } What is the value of a [ 4 ] ?

(A) 3

(B) 1

(C) 2

(D) 0

Correct Answer

(D) 0

Explanation

Solution: In the fourth location of an array it contains 0 since default initialization will take place.

[#3] The C library function checks whether the passed character is printable.

(A) isgraph()

(B) isalpha()

(C) isprint()

(D) ispunct()

Correct Answer

(C) isprint()

[#4] Which of the following is the variable type defined in header string. h?

(A) sizet

(B) size

(C) size_t

(D) size-t

Correct Answer

(C) size_t

[#5] Which among the given options is the right explanation for the statement size_t strcspn(c, s)?

(A) return length of prefix of s consisting of characters not in c

(B) return length of prefix of s consisting of characters present in c

(C) return length of prefix of c consisting of characters not in s

(D) return length of prefix of c consisting of characters present in s

Correct Answer

(C) return length of prefix of c consisting of characters not in s

Arrays And Strings - Study Mode

[#1] Which of the following correctly accesses the seventh element stored in arr, an array with 100 elements?

Correct Answer

Explanation

[#2] int a [ 5 ] = { 1,2,3 } What is the value of a [ 4 ] ?

Correct Answer

Explanation

[#3] The C library function checks whether the passed character is printable.

Correct Answer

[#4] Which of the following is the variable type defined in header string. h?

Correct Answer

[#5] Which among the given options is the right explanation for the statement size_t strcspn(c, s)?

Correct Answer