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Exam 8: Arrays

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Question 1

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Which of the following correctly declares and initializes alpha to be an array of four rows and three columns with the component type int?

A) int alpha[4][3] = {{0,1,2} {1,2,3} {2,3,4} {3,4,5}};
B) int alpha[4][3] = {0,1,2; 1,2,3; 2,3,4; 3,4,5};
C) int alpha[4][3] = {0,1,2: 1,2,3: 2,3,4: 3,4,5};
D) int alpha[4][3] = {{0,1,2}, {1,2,3}, {2,3,4}, {3,4,5}};

E) B) and C)
F) A) and D)

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Question 2

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What is the output of the following C++ code?

A) 2 4 6 8 10
B) 4 3 2 1 0
C) 8 6 4 2 0
D) 10 8 6 4 2

E) A) and B)
F) A) and C)

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Question 3

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Assume you have the following declaration double salesData[1000];.Which of the following ranges is valid for the index of the array salesData?

Given the following declaration:int j; int sum; Double sale[10][7]; Which of the following correctly finds the sum of the elements of the fourth column of sale?

For a list of length n, the ____________________ sort makes exactly (n(n - 1))/2 key comparisons and 3(n - 1) item assignments.

Assume you have the following declaration char nameList[100];.Which of the following ranges is valid for the index of the array nameList?

Consider the following statement: int alpha[25][10];.Which of the following statements about alpha is true?

What is the output of the following C++ code?

In C++, the null character is represented as ____.

Consider the following declaration:char charArray[51]; char discard; Assume that the input is:Hello There! How are you? What is the value of discard after the following statements execute?

If an array index goes out of bounds, the program always terminates in an error.

The one place where C++ allows aggregate operations on arrays is the input and output of C-strings.

Suppose list is a one dimensional array of size 25, wherein each component is of type int.Further, suppose that sum is an int variable.The following for loop correctly finds the sum of the elements of list.

Consider the statement int list[10][8];.Which of the following about list is true?

Arrays can be passed as parameters to a function by value, but it is faster to pass them by reference.

What is the output of the following C++ code?

The form of the for loop shown below is called a(n) ____________________ for loop. for (dataType identifier : arrayName) statements ​

Assume you have the following declaration int beta[50];.Which of the following is a valid element of beta?

The statement int list[25]; declares list to be an array of 26 components, since the array index starts at 0.

All components of an array are of the same data type.