2.1
package practice;
import java.util.Scanner;
public class practice2_1 {
public static void main(String[] args) {
Scanner input=new Scanner(System.in);
System.out.println("Enter a degree in Celsius:");
double centigrade=input.nextDouble();
double fahrenheit;
fahrenheit=(9.0/5)*centigrade+32;
System.out.println(centigrade+" Celsius is "+fahrenheit+" Fahrenheit ");
}
}
2.2
package practice;
import java.util.Scanner;
public class practice2_2 {
public static void main(String[] args) {
Scanner input=new Scanner(System.in);
System.out.println("Enter the radius and length of a cylinder:");
double radius=input.nextDouble();
double length=input.nextDouble();
double area,volume;
area=radius*radius*Math.PI;
volume=area*length;
System.out.println("The area is "+area);
System.out.println("The volume is "+volume);
}
}
2.3
package practice;
import java.util.Scanner;
public class practice2_3 {
public static void main(String[] args) {
Scanner input=new Scanner(System.in);
System.out.println("Enter a value for feet:");
double feet=input.nextDouble();
double meter=0.305*feet;
System.out.println(feet+" feet is "+meter+" meters");
}
}
2.4
package practice;
import java.util.Scanner;
public class practice2_4 {
public static void main(String[] args) {
Scanner input=new Scanner(System.in);
System.out.println("Enter a number in pounds:");
double pounds=input.nextDouble();
double kilograms=0.454*pounds;
System.out.println(pounds+" pounds is "+kilograms+" kilograms");
}
}
2.5
package practice;
import java.util.Scanner;
public class practice2_5 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input=new Scanner(System.in);
System.out.println("Enter the subtotal and a pratuity rate:");
double subtotal=input.nextDouble();
double gratuity_rate=input.nextDouble();
double gratuity=gratuity_rate*subtotal*0.01;
double total=subtotal+gratuity;
System.out.println("The gratuity is $"+gratuity+" and total is $"+total);
}
}
2.6
2.7
2.8
2.9
2.10
2.11
2.12
2.13
2.14
2.15
2.16
2.17
2.18
2.19
2.20
2.21
2.22
2.23