COMPUTER PROGRAMMING Lab5 Exercise 1 Convert feet into

COMPUTER PROGRAMMING Lab(5)

Exercise 1 (Convert feet into meters) Write a program that reads a number in feet, converts it to meters, and displays the result. One foot is 0. 305 meter. Here is a sample run:

Source code: package ex 2_3; import java. util. Scanner; public class EX 2_3 { public static void main(String[] args) { Scanner input = new Scanner (System. in); System. out. println("Enter a value in feet : "); double feet = input. next. Double(); double meter = feet *0. 305 ; System. out. println(feet+ " Feet is " + meter + " meter. "); } }

Output:

Exercise 2 (Financial application: calculate tips) Write a program that reads the subtotal and the gratuity rate, then computes the gratuity and total. For example, if the user enters 10 for the subtotal and 15% for gratuity rate, the program displays $1. 5 as gratuity and $11. 5 as total. Here is a sample run :

Source code: package ex 2_5; import java. util. Scanner; public class EX 2_5 { public static void main(String[] args) { // Read subtotal Scanner input = new java. util. Scanner(System. in); System. out. print("Enter subtotal and gratuity rate: "); double subtotal = input. next. Double(); double rate = input. next. Double(); double gratuity = subtotal * rate / 100; double total = subtotal + gratuity; System. out. println ("The gratuity is " + gratuity + " total is " + total); } }

Output:

Exercise 3 (Swap two numbers) Write a program that swap two integers then displays them before and after swapping.

Output:

Source code: public class EX 1 { public static void main(String[] args) { int num 1 = 10; int num 2 = 20; System. out. println("Before Swapping"); System. out. println("Value of num 1 is : " + num 1); System. out. println("Value of num 2 is : " +num 2); //swap the value int temp = num 1; num 1 = num 2; num 2 = temp; System. out. println("After Swapping"); System. out. println("Value of num 1 is : " + num 1); System. out. println("Value of num 2 is : " +num 2); } }