#1 Analyze the following code. double sum = 0; double d; for (d = 0; d < 10; d =

ID: 3570094 • Letter: #

Question

#1 Analyze the following code.

double sum = 0;

double d;

for (d = 0; d < 10; d = d + 0.1 )

{

sum = sum + d;

}

a.The program has a syntax error because the semicolons in the for loop are in the wrong place.

#2 What is y after the following for loop statement is executed?

int y = 0;

for (int i=0; i < 10; i ++)

{

y ++;

}

a. 9

#3 Array arr is declared and initialized in the following line of code:

int [ ] arr = {10, 7, 3, 5, 9};

What is arr[3] - arr[1]?

#4 Which of the following is a valid array declaration and initialization?

a. char [ ] charArray;

charArray = new char[26];

b. int [ ] words;

words = new words[10];

c. char [ ] charArray;

charArray = 15;

d. double [3] nums;

#5 Consider the following code fragment:

int [ ] list;

list = new int[10];

for (int i = 0; i <= 10; i = i + 1)

{

list[i] = 0;

}

Which of the following statements is true?

a.The loop body will execute 9 times

#6 Assume the declaration of the method xMethod is as follows. This means that xMethod is sent one object that is an array of double values.

public static void xMethod(double [ ] a);

Which of the following could be used to call xMethod?

a. xMethod(5.7);

b. xMethod(

b.The program has a syntax error because the control variable in the for loop cannot be double.

Explanation / Answer

double sum = 0;

double d;

for (d = 0; d < 10; d = d + 0.1 )

{

sum = sum + d;

}

a.The program has a syntax error because the semicolons in the for loop are in the wrong place.

b.The program has a syntax error because the control variable in the for loop cannot be double.

c. The program compiles but does not stop because d would always be less than 10.

d. The program compiles and runs fine.

#2 What is y after the following for loop statement is executed?

int y = 0;

for (int i=0; i < 10; i ++)

{

y ++;

}

a. 9

b. 10

c. 11

d. 12

#3 Array arr is declared and initialized in the following line of code:

int [ ] arr = {10, 7, 3, 5, 9};

What is arr[3] - arr[1]?

a. -7

b. 7

c.-2

d. 2

#4 Which of the following is a valid array declaration and initialization?

a. char [ ] charArray;

charArray = new char[26];