91Ó°ÊÓ

What is the difference between double and int data types?

Write code segments that perform the following tasks: a. Prompt the user for an hourly wage and read the wage into a double variable wage. b. Prompt the user for a Social Security number and read this value into the string variable ssn.

At what point in the program development process are syntax errors, run-time errors, and logic errors detected?

What is the vocabulary of a language? Give an example of an item in the vocabulary of Java.

State two rules of thumb for writing appropriate comments in a program.

The following program contains a logic error. Describe where to insert the appropriate debugging statements to help locate the error: import java. util. Scanner; public class AreaTriangle\\{ public static void main(String [] args) \\{ double base, height, area; Scanner reader = new Scanner (System. in); System.out.print("Enter the base of the triangle:"); base \(=\) reader nextDouble( ); system.out.print("Enter the height of the triangle: "); height = reader.nextDouble(); area \(=\) base \(+\) height \(/ 2\); system.out.println("The area is " + area);

Give an example of a run-time error and explain why the computer cannot catch it earlier in the program development process.

Convert the following floating-point numbers to exponential notation: a. \(23.5\) b. \(0.046\)

Describe two differences between programming languages and natural languages.

Convert the following numbers from exponential notation to floating-point notation: a. \(32.21 \mathrm{E4}\) b. \(55.6 \mathrm{E}-3\)