Lab3 Homework.txt

Homework####################################################################
task01---------------------------------------------------------

import java.util.Scanner;
public class Lab3 {
  public static void main(String[] args) { 
    Scanner scanner = new Scanner(System.in);
    System.out.print("Enter the first number: ");
    double a = scanner.nextDouble();
    System.out.print("Enter the second number: ");
    double b = scanner.nextDouble();
    System.out.print("Enter the operator: ");
    
    String op = scanner.next();
    char ope = op.charAt(0);
    
    double result = 0;
    switch (ope) {
      case '+' :
        result = a+b;
        break;
      case '-' :
        result = a-b;
        break;
      case '*':
        result = a*b;
        break;
      case '/':
        if (a<b) {
          
      }
        result = a/b;
        break;
    }
    System.out.print(result);
    
   /* ADD YOUR CODE HERE */
  }  
}




Alter task01---------------------------------------------------------------

import java.util.Scanner;
public class Lab3 {
  public static void main(String[] args) { 
 Scanner scanner = new Scanner(System.in);

        // Input
        System.out.println("Enter first number: ");
        int num1 = scanner.nextInt();
        System.out.println("Enter second number: ");
        int num2 = scanner.nextInt();
        System.out.println("Enter operator (+, -, *, /): ");
        String operator = scanner.next();

        // Calculation
        int result = 0;
        if (operator.equals("+")) {
            result = num1 + num2;
        } else if (operator.equals("-")) {
            result = num1 - num2;
        } else if (operator.equals("*")) {
            result = num1 * num2;
        } else if (operator.equals("/")) {
            if (num2 != 0) {
                result = num1 / num2;
            } else {
                System.out.println("Error: Division by zero.");
                return;
            }
        } else {
            System.out.println("Error: Invalid operator.");
            return;
        }

        // Output
        System.out.println("Result: " + result);
   /* ADD YOUR CODE HERE */
  }  
}



task02-------------------------------------------------------------------


import java.util.Scanner;
public class Lab3 {
  public static void main(String[] args) { 
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter an integer number: ");
        int number = scanner.nextInt();
        
        if (number % 5 == 0 && number % 7 == 0) {
            System.out.println("Divisible by Both");
        } 
        else if (number%5==0) {
          System.out.println("Invalid: Divisible by 5 Only ");
        }
         else if (number%7==0) {
          System.out.println("Invalid: Divisible by 7 Only ");
        }
        else {
            System.out.println("No");
        }
   /* ADD YOUR CODE HERE */
  }  
}



task03-------------------------------------------------------------------


import java.util.Scanner;
public class Lab3 {
  public static void main(String[] args) { 
        Scanner scanner = new Scanner(System.in);

        System.out.println("Input the value of 'X': ");
        double num = scanner.nextInt();
        double result = 0;
        if (num<0) {
          result = 2*num;
        }
        else if (num>=0 && num<2) {
          result = num + 1;      
        }
        else if (num>=2 && num<5) {
          result = (num*num) - 1;
        }
        else {
          result = (3*(num*num)) + 2;
        }
        System.out.println("Output: "+result);
   /* ADD YOUR CODE HERE */
  }  
}




task04-------------------------------------------------------------------


import java.util.Scanner;
public class Lab3 {
  public static void main(String[] args) { 
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter BRACU Student ID: ");
        int studentID = scanner.nextInt();
        
        int year = studentID / 1000000; // Extracting the first two digits as year
        int sessionCode = (studentID / 100000) % 10; // Extracting the 3rd digit as session code
        
        String session = "";
        switch (sessionCode) {
            case 1:
                session = "Spring";
                break;
            case 2:
                session = "Fall";
                break;
            case 3:
                session = "Summer";
                break;
            default:
                session = "Unknown";
        }
        
        System.out.println("Student joined BRAC in " + session + " " + year);
   /* ADD YOUR CODE HERE */
  }  
}




task05-------------------------------------------------------------------


import java.util.Scanner;
public class Lab3 {
  public static void main(String[] args) { 
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter payment: ");
        double payment = scanner.nextDouble();
        System.out.print("Enter age: ");
        int age = scanner.nextInt();

        double tax = 0;

        if ((age < 18) || (payment < 10000)) {
            System.out.println("Your tax amounts to 0 Tk");
        } 
        else {
            if (payment >= 10000 && payment <= 20000) {
                tax = 0.05 * payment;
                System.out.println("Your tax amounts to " + tax + " Tk");
            } 
            else {
                tax = 0.10 * payment;
                System.out.println("Your tax amounts to " + tax + " Tk");
            }
        }
   /* ADD YOUR CODE HERE */
  }  
}




task06-------------------------------------------------------------------


import java.util.Scanner;
public class Lab3 {
  public static void main(String[] args) { 
        Scanner scanner = new Scanner(System.in);

        System.out.println("Enter three float numbers:");
        float num1 = scanner.nextFloat();
        float num2 = scanner.nextFloat();
        float num3 = scanner.nextFloat();

        // Assume the first number is both max and min initially
        float max = num1;
        float min = num1;

        // Update max and min accordingly
        if (num2 > max) {
            max = num2;
        } else if (num2 < min) {
            min = num2;
        }

        if (num3 > max) {
            max = num3;
        } else if (num3 < min) {
            min = num3;
        }

        System.out.println("Maximum number is " + max);
        System.out.println("Minimum number is " + min);
   /* ADD YOUR CODE HERE */
  }  
}






task07-------------------------------------------------------------------



import java.util.Scanner;

public class Lab04 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);   
        System.out.print("Enter the amount the customer need to pay(Taka) : ");
        int payment = scanner.nextInt();
        System.out.print("Enter the amount, customer gave(Taka) : ");
        int gave =scanner.nextInt();
        
        if (payment > gave) {
          System.out.println("Please pay "+ (payment-gave) +" taka more.");
        }
        else if (payment == gave) {
          System.out.println("The returned amount is 0 taka. ");
        }
        else {
          int change = gave - payment;
          System.out.println("The returned amount is "+ (gave-payment)+" taka.");
          System.out.println("100 taka note: "+change/100);
          change = change % 100;
          System.out.println("50 taka note: "+change/50);
          change = change % 50;
          System.out.println("20 taka note: "+change/20);
          change = change % 20;
          System.out.println("10 taka note: "+change/10);
          change = change % 10;
          System.out.println("5 taka coin: "+change/5);
          change = change % 5;
          System.out.println("2 taka coin: "+change/2);
          change = change % 2;
          System.out.println("1 taka coin: "+change);
          
        }
    }
}
     






task08-------------------------------------------------------------------



import java.util.Scanner;
public class Lab3 {
  public static void main(String[] args) { 
        Scanner scanner = new Scanner(System.in);

        System.out.println("Input the 1st number:");
        int num1 = scanner.nextInt();

        System.out.println("Input the 2nd number:");
        int num2 = scanner.nextInt();

        System.out.println("Input the 3rd number:");
        int num3 = scanner.nextInt();

        if (num1 == num2 && num2 == num3) {
            System.out.println("All numbers are equal");
        } 
        else if (num1 != num2 && num2 != num3 && num1 != num3) {
            System.out.println("All numbers are different");
        } 
        else {
            System.out.println("Neither all are equal or different");
        }
   /* ADD YOUR CODE HERE */
  }  
}