Programming and Problem Solving with Java

514

6.Given the declarations in Question 2 and the following code fragment, which reads

characters into the arrayfirstNameuntil a blank is encountered, write afor

statement that prints out the portion of the array that is filled with input data. (p.

000)

n = 0 ;

line = infile.readLine();

letter = line.charAt(n);

while(letter != ' ')

{

firstName[n] = letter;

n++;

letter = line.charAt(n);

}

Answers

1.boolean[] quizAnswer = new boolean[ 12 ];

2. a. firstName[ 0 ] = 'A';b.outFile.println(firstName[ 13 ]);
   c. for(intindex = 0 ; index < firstName.length; index++)
   firstName[index] = ' ';
   3.int[] oddNums = { 1 , 3 , 5 , 7 , 9 };
   4.public voidsomeFunc(float[] values)


3. a. gradeBook[ 9 ].gpa = 3.25;b.gradeBook[ 3 ].examScores[ 2 ] = 78 ;
   6.for(intindex = 0 ; index < n; index++)
   outFile.print(firstName[index]);

Exam Preparation Exercises

1.Every component in an array must have the same type, and the number of

components is fixed at creation time. (True or False?)

2.The components of an array must be of a primitive type. (True or False?)

3.Declare and instantiate one-dimensional arrays according to the following de-

scriptions.

a.A 24-element floatarray

b.A 500-element intarray

c. A 50-element double-precision floating-point array

d.A 10-element chararray

4.Write a code fragment to perform the following tasks:

a.Declare a constant namedCLASS_SIZErepresenting the number of