Explanation of Solution
a. The given code:
// creating an integer variable n
int n = 1;
//iterate a for loop up to the condition i < 5.
for (int i = 2; i < 5; i++)
{
//adding value of “i” to “n”
n = n + i;
}
//printing the value of n
System.out.print(n);
Explanation:
The above snippet of code is used to demonstrate “for” loop. In the code,
- An integer variable “n” is declared and assigned a value “1”.
- Iterate “for” loop up to the condition “i < 5”. The loop variable was initialized with “i=1” and for every iteration “i” is incremented by “1”.
- The variable “n” is added with value of “i”.
- The value of “n” is printed on the screen.
Trace table for the code snippet:
n = 1+2 = 3
n = 3+3 = 6;
n = 6+4 = 10;
Expected output:
10
b. The given code:
// creating an integer variable i.
int i;
//creating a double variable “n”
double n = 1 / 2;
//iterate a for loop up to the condition i <= 5.
for (i = 2; i <= 5; i++)
{
//changing the value of “n”
n = n + 1.0 / i;
}
//printing the value of i
System.out.print(i);
Explanation:
The above snippet of code is used to demonstrate “for” loop. In the code,
- An integer variable “i” is created.
- An integer variable “n” is created and assigned a value “1 / 2”.
- Iterate “for” loop up to the condition “i <= 5”. The loop variable was initialized with “i=2” and every iteration “i” is incremented by “1”.
- The variable “n” is added with value of “n + 1.0 / i”.
- The value of “i” is printed on the screen.
Trace table for the code snippet:
i will be 6;
Expected output:
6
c. The given code:
// creating and initializing double variable “x”.
double x = 1;
// creating and initializing double variable “y”.
double y = 1;
// creating and initializing integer variable “i”.
int i = 0;
//iterate a do..while loop
do
{
// the value of “y” is divided by “2”.
y = y / 2;
// the value of “x” is added with the value “x”.
x = x + y;
//the value of “i” is incremented by “1”...
Want to see the full answer?
Check out a sample textbook solutionChapter 6 Solutions
Big Java, Binder Ready Version: Early Objects
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education