Question

Create a menu-driven Java application that solves several math problems. The user will select a number, and the program will respond with a necessary data. When the user enters option 5, the program will end. Below is sample output for the program:

What would you like me to do?

1. Calculate area of a circle?

2. Convert Fahrenheit temperature to Celsius?

3. Convert miles to kilometer?

4. Convert inches to centimeter?

5. Exit program?

Please enter your option:

1 Enter the radius of a circle: 1.0

The area of a circle with radius 1.0 is 3.142

What would you like me to do?

1. Calculate area of a circle?

2. Convert Fahrenheit temperature to Celsius?

3. Convert miles to kilometer?

4. Convert inches to centimeter?

5. Exit program?

Please enter your option: 5

Good bye!

Answer 1

import java.util.Scanner;
class GFG {
   public static void main (String[] args) {
   Scanner sc = new Scanner(System.in);
   double pi=3.14159265358979323;
int option;
do
{
System.out.println("What would you like me to do?\n1. Calculate area of a circle?\n2. Convert Fahrenheit temperature to Celsius?\n3. Convert miles to kilometer?\n4. Convert inches to centimeter?\n5. Exit program?\nPlease enter your option:");
option = sc.nextInt();
if(option==1)
{
System.out.println("Enter the radius of circle: ");
double radius=sc.nextDouble();
System.out.println(pi*radius*radius);
}
if(option==2)
{
System.out.println("Enter temperature in Fahrenheit:");
double temp=sc.nextDouble();
System.out.println((temp-32)*(5.0/9));
}
if(option==3)
{
System.out.println("Enter the miles: ");
double miles=sc.nextDouble();
System.out.println(miles*1.609);
}
if(option==4)
{
System.out.println("Enter the inches:");
double inches=sc.nextDouble();
System.out.println(inches*2.54);
}
}while(option!=5);
System.out.println("Good Bye!");
}
}