CONDITION CHECKING PROGRAMS

program to find highest of three number using nested if

import java.util.*;

class check2

{

public static void main(String args[])

{

Scanner Sn=new Scanner(System.in));

int x,y,z,m;

Systemout.println(“enter three number”);

x=Sn.nextInt();

y= Sn.nextInt();

z= Sn.nextInt();

if(x>=y)

{         

            if(x>=z)

                        m=x;

            else

                        m=z;

}

else

{

            if(y>=z)

                        m=y;

            else

                        m=z;

}

System.out.println(“highest  number is ”+m);

}

}

// above program will input 3 number from user if x is greater than y  then x will be compared with z if this condition is also true then it will display x otherwise it will display z else if x is less then y then y will be compared with z and depending upon condition given in else block y or z will be displayed.

// program to find calculate net salary of the employee depending upon basic salary.

Basic                                       DA      HRA

Less than 2000                        10%     5%

Greater than equal to 2000     25%     15%

But less than 4000

Greater than equal to 4000     30%     25%

But less than 8000

Greater than 8000                   40%     30%

import java.util.*;

class check2

{

public static void main(String args[]) throws Exception

{

Scanner Sn=new Scanner(System.in));

int basic;

double da,hra,net;

Systemout.println(“enter basic salary”);

basic=Sn.nextInt();

if(basic<2000)

{

da=0.10*basic;

hra=0.05*basic;

}

else if(basic<4000)

{

da=0.25*basic;

hra=0.15*basic;

}

else if(basic<8000)

{

da=0.30*basic;

hra=0.25*basic;

}

else

{

da=0.40*basic;

hra=0.30*basic;

}

net=basic+da+hra;

System.out.println(“Basic Salary “+basic);

System.out.println(“Dearness allowance “ + da);

System.out.println(“House rent “+hra);

System.out.println(“Net Salary “+net);

}

}

A cloth showroom has announced the following discounts on the purchase of items, based on the total cost of the item purchased:-

Total Cost                                    Discount(in percentage)

Less than Rs 2000                       5%

Rs 2001 to Rs. 5000         25%

Rs. 5001 to Rs 10000       35%

Above Rs. 10000              50%

Write a program to input the total cost and to compute and display the amount to be paid by the customer after availing the discount.                                             [2006]

import java.util.*;

class prog2

{

public static void main(String args[]) throws Exception

{

Scanner Sn=new Scanner(System.in));

int cost;

double amt,dis;

Systemout.println(“Enter Cost to the item”);

cost=Sn.nextInt();

if(cost<=2000)

  dis=cost*0.05;

else if(cost<=5000)

  dis=cost*0.25;

else if(cost<=10000)

  dis=cost*0.35;

else

  dis=0.50;

amt=cost-dis;

System.out.println(“Amount to be paid “+amt);

}

}

program to input two numbers and an operator perform arithmetic operation as per operator

import java.util.*;

class check7

{

public static void main(String args[]) throws Exception

{

Scanner Sn=new Scanner(System.in));

int a,b;

char op;

System.out.println(“enter 2 numbers and one operator”);

a= Sn.nextInt();

b= Sn.nextInt();

op=Sn.next().charAt(0);

switch(op)

{

case  ‘+’: System.out.println(a+b);

                break;

case  ‘-’: System.out.println(a-b);

                break;

case  ‘*’: System.out.println(a*b);

                break;

case  ‘/’: if(b==0)

                System.out.println(“divide by zero”);

               else

                        System.out.println(a/b);

                break;

default : System.out.println(“invalid operator”);

            break;

}
Write a menu driven program to convert temperature from Fahrenheit to Celsius and Celsius to Fahrenheit

Solution :-

import java.io.*;

public class first

{

    public static void main()throws IOException

    {

        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

       

System.out.println("Press 1 for Fahrenhite to Celsius");

        System.out.println("Press 2 for Celsius to Fahrenhite");

       

System.out.println("Enter Your choice :- ");

        int c=Integer.parseInt(br.readLine());

       

double t,res;

       

switch(c)

        {

            case 1:System.out.println("Enter temperature in Fahrenhite :- ");

                    t=Double.parseDouble(br.readLine());

                    res=(t-32)* (5/9);

                    System.out.println("Temperature in Celsius is :- " + res);

            break;

       

    case 2:System.out.println("Enter temperature in Celsius :- ");

                    t=Double.parseDouble(br.readLine());

                    res=t*(9/5) + 32;

                    System.out.println("Temperature in Fahrenhite is :- " + res);

            break;

       

    default : System.out.println("Wrong choice");

            break;

         }

    }

}

Output

Press 1 for Fahrenhite to Celsius

Press 2 for Celsius to Fahrenhite

Enter Your choice :-

1

Enter temreture in Fahrenhite :-

78.97

Tempreture in Celsius is :- 26.094444444444445

Variable Description

Variable	Type	Purpose
c	Integer	Storing choice of user
t	double	Storing temperature from user
res	double	Storing temperature after convertion

Write a program that outputs the results of the following evaluations based on number entered by the               User:-

a)  Natural Logarithm of the number.

b)  Absolute value of the number.

c)   Square root of the number.

d)  Random numbers between 0 and 1.

Solution :-

import java.io.*;

public class ten

{

public static void main() throws IOException

    {

        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

        int choice=1,n;

        double cel,fah;

        while(choice!=0)

        {

           System.out.println("Press 1 for Natural Log of a number");

          System.out.println("Press 2 for Absolute value of a number");

          System.out.println("Press 3 for Squire root of a number");

          System.out.println("Press 4 for random number between 0 and 1");

            System.out.println("Press 0 for exit");

           System.out.println("Enter your choice :- ");

            choice =Integer.parseInt(br.readLine());

            switch(choice)

            {

                case 1: System.out.println("Enter a number :- ");

                        n =Integer.parseInt(br.readLine());

                        System.out.println("Natural Logarithm =\t"+Math.log(n));

                break;

                case 2: System.out.println("Enter a number :- ");

                        n =Integer.parseInt(br.readLine());

                        System.out.println("Absolute value =\t"+Math.abs(n));

                break;

                case 3: System.out.println("Enter a number :- ");

                        n =Integer.parseInt(br.readLine());

                        System.out.println("Square Root =\t"+Math.sqrt(n));

                break;

                case 4: System.out.println("Random Number ="+Math.random());

                break;

                case 0  : break;

                default: System.out.println("Wrong Choice");

            }

        }

    }

}

Output

Press 1 for Natural Log of a number

Press 2 for Absolute value of a number

Press 3 for Squire root of a number

Press 4 for random number between 0 and 1

Press 0 for exit

Enter your choice :-

1

Enter a number :-

6

Natural Logarithm =      1.791759469228055

Press 1 for Natural Log of a number

Press 2 for Absolute value of a number

Press 3 for Squire root of a number

Press 4 for random number between 0 and 1

Press 0 for exit

Enter your choice :-

0

Variable Description

Variable	Type	Purpose
choice	Integer	Storing choice of user
n	Integer	Storing number of doing operation