Question

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write a program to input appropriate value and print result of $\sqrt{ {a}^{2} } \: + \: {b}^{2}$ {in java}.

note→ Valuable description and documentation needed.

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Kindly please don't spam :)​

Answer 1

Code:-

import java.util. *;

class Function

{

public static void main (String[] args)

{

Scanner sc=new Scanner (System.in) ;

System.out.print("Value of a and b");//Using Scanner class

int a=sc.nextInt();

int b=sc.nextInt();

double result= Math.sqrt(Math.pow(a,2))+Math.pow(b,2);//using data type double for Math Functions

System.out.println("Result\t ="+result);//Output

}

}

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$\large\bf\blue{Variable\:desription\: table}$

Variable | Data type | use

a | Integer. | to assign the value in main()

b. | Integer. | to assign the value in main()

result. | Double. | to get the result of Calculation

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Important Points:-

• I used Scanner class here to insure that we ask user for value of n through keyboard.

• Scanner is a class in java.util package used for obtaining the input of the primitive types like int, double, etc. and strings through keyboard. It is the easiest way to read input in a Java program.

• Always divide double data type variable with integer variable , integer variable from double data type variable or double variable from double,To ensure 100% result.

Answer 2

Question:-

Write a program to input appropriate value and print result of √(a² + b²).

Program:-

import java.util.Scanner; // to import Scanner Class

class Calculate //Class name

{

public static void main(String s[]) //main method

{

// Creating objects of scanner class.

Scanner sc=new Scanner(System.in);

System.out.print("Enter a: ");

// Taking input of a

int a=sc.nextInt();

System.out.print("Enter b: ");

int b=sc.nextInt();

// Storing the result.

double result = Math.sqrt(a*a + b*b);

System.out.println("Result is: "+result);

} //end of main() method.

}// end of class.

This is the required program.

I have added comments so that you can understand better.

Note:- Words written in bold letters are keywords.

Variable Description:-

(Variable Name) (Data type) (Function)

1. a int(integer) Used to store the value of a.

2. b int(integer) Used to store the value of b.

3. result double Used to store square root of a² + b².

Math functions used:-

1. Math.sqrt():- Used to calculate square root of any positive real number.

Other maths functions:-

1. Math.cbrt() :- Used to calculate square root.
2. Math.max() :- Used to find maximum of two numbers.
3. Math.min() :- Used to find minimum of two numbers.