IfElse_advance.txt

1)C program to find out whether a given year is a leap year or not:

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

        int n;
        System.out.print("Enter a year: ");
        n= sc.nextInt();
        if(n%4==0 && n%100!=0){
            System.out.println(n + " is a leap year");
        }
        else{
            System.out.println(n + " is not a leap year");
        }


    }
}

Output:
Enter a year: 2023
2023 is not a leap year

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2)C program to convert temperature from Fahrenheit to Celsius and Celsius to Fahrenheit
celsius 
f---->c 
fahrenheit
c---f 

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

        char t;
        float temp, f, c;
        System.out.print("Enter the temperature unit you want to input(c/f): ");
        t= sc.next().charAt(0);
        if(t=='c' || t=='C'){
            System.out.print("Enter temperature in Celcius: ");
            temp= sc.nextFloat();
            f= (temp*9)/5 +32;
            System.out.println(temp + "C = " + f + "F");
        }
        else if(t=='f' || t=='F'){
            System.out.print("Enter temperature in Fahrenheit: ");
            temp= sc.nextFloat();
            c= ((temp-32)*5)/9;
            System.out.println(temp + "F = " + c + "C");
        }
    }
}

Output:
Enter the temperature unit you want to input(c/f): c
Enter temperature in Celcius: 34
34.0C = 93.2F

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3)Check whether the trainge , square , reactanlge (area & volume)
->input area /volume 
area 
traingle square rectangle 
square 


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

        String cal, shape;
        int tbase, theight, tarea, side, sarea, length, breadth, rarea, height, rec_vol;
        int cone_r, cone_height, cube_vol;
        float cone_vol;
        System.out.print("Input area/volume: ");
        cal= sc.next();
        if(cal.equals("area")){
            System.out.print("Choose triangle/ square/ rectangle: ");
            shape= sc.next();
            if(shape.equals("triangle")){
                System.out.print("Enter base: ");
                tbase= sc.nextInt();
                System.out.print("Enter height: ");
                theight= sc.nextInt();
                tarea= (tbase * theight)/2;
                System.out.println("Area of triangle is " + tarea);
            }
            else if(shape.equals("square")){
                System.out.print("Enter side: ");
                side= sc.nextInt();
                sarea= side* side;
                System.out.println("Area of square is " + sarea);
            }
            else if(shape.equals("rectangle")){
                System.out.print("Enter length: ");
                length= sc.nextInt();
                System.out.print("Enter breadth: ");
                breadth= sc.nextInt();
                rarea= length * breadth;
                System.out.println("Area of rectangle is: " + rarea);
            }
            else{
                System.out.println("Input mismatch");
            }
        }
        else if(cal.equals("volume")){
            System.out.print("Choose cone/ cube/ cuboid: ");
            shape= sc.next();
            if(shape.equals("cone")){
                System.out.print("Enter radius: ");
                cone_r= sc.nextInt();
                System.out.print("Enter height: ");
                cone_height= sc.nextInt();
                cone_vol= (3.14f * cone_r * cone_r * cone_height)/3;
                System.out.println("Volume of cone is " + cone_vol);
            }
            else if(shape.equals("cube")){
                System.out.println("Enter side: ");
                side= sc.nextInt();
                cube_vol= side * side * side;
                System.out.println("Volume of cube is " + cube_vol);
            }
            else if(shape.equals("cuboid")){
                System.out.print("Enter length: ");
                length= sc.nextInt();
                System.out.print("Enter breadth: ");
                breadth= sc.nextInt();
                System.out.print("Enter height: ");
                height= sc.nextInt();
                rec_vol= length * breadth * height;
                System.out.println("Volume of cuboid is " + rec_vol);
            }
            else{
                System.out.println("Input mismatch");
            }
        }
        else{
            System.out.println("input mismatch");
        }

    }
}


Output:
Input area/volume: volume
Choose cone/ cube/ cuboid: cone
Enter radius: 7
Enter height: 12
Volume of cone is 615.44006


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4)java program to check whether a character is an alphabet or not
input =a =alpha 
3 =this is a digit

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

        char ch;
        System.out.print("Enter a character: ");
        ch= sc.next().charAt(0);
        if((ch>='a' && ch<='z') || (ch>='A' && ch<='Z')){
            System.out.println("This is an alphabet");
        }
        else if(ch>='0' && ch<='9'){
            System.out.println("This is a digit");
        }
        else{
            System.out.println("Input mismatch");
        }

    }
}

Output:
Enter a character: l
This is an alphabet

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5) C program to enter student marks and find percentage and grade
A college has the following rules for the grading system:
5 marks (grade + %)
1. Below 25 – F
2. 25 to 45 – E
3. 45 to 50 – D
4. 50 to 60 – C
5. 60 to 80 – B 
6. Above 80 – A


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

        int m1, m2, m3, m4, m5;
        float total_marks, percent;
        char grade;
        System.out.println("Enter marks of the respective subjects: ");
        System.out.print("English: ");
        m1= sc.nextInt();
        System.out.print("Math: ");
        m2= sc.nextInt();
        System.out.print("Physics: ");
        m3= sc.nextInt();
        System.out.print("Chemistry: ");
        m4= sc.nextInt();
        System.out.print("Computer: ");
        m5= sc.nextInt();

        total_marks= m1+ m2+ m3+ m4+ m5;
        System.out.println("Total marks= " + total_marks);
        percent= (total_marks/500)*100;
        System.out.println("Percentage= " + percent);

        if(percent<25){
            grade= 'F';
        }
        else if(percent>=25 && percent<45){
            grade= 'E';
        }
        else if(percent>=45 && percent<50){
            grade= 'D';
        }
        else if(percent>=50 && percent<60){
            grade= 'C';
        }
        else if(percent>=60 && percent<80){
            grade= 'B';
        }
        else{
            grade= 'A';
        }
        System.out.println("Grade= " + grade);

    }
}


Output:
Enter marks of the respective subjects: 
English: 78
Math: 87
Physics: 65
Chemistry: 53
Computer: 92
Total marks= 375.0
Percentage= 75.0
Grade= B


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6)Write a java program to accept the height of a person in centimeters and categorize the person according to their height.

->meter ===>cm 
mid 
low 
high 

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

        float height;
        System.out.print("Enter height in cms: ");
        height= sc.nextFloat();
        if(height<140){
            System.out.println("Low height");
        }
        else if(height>=140 && height<180){
            System.out.println("Mid height");
        }
        else{
            System.out.println("High height");
        }

    }
}

Output:
Enter height in cms: 152
Mid height

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7)Write a java program to read the roll no, name,fnname and marks of three subjects and calculate the total, percentage and division.
Test Data :
Input the Roll Number of the student :784
student name : 
fname:
mname:
address:
contact:
Input the marks of Physics, Chemistry and Computer Application : 70 80 90
total: 
precentage : % 
division:


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

        int roll;
        long contact;
        String name, fname, mname, address, div;
        float phy, chem, math, total, per;

        System.out.print("Enter roll no: ");
        roll= sc.nextInt();
        System.out.print("Enter your name: ");
        name= sc.next();
        System.out.print("Enter father's name: ");
        fname= sc.next();
        System.out.print("Enter mother's name: ");
        mname= sc.next();
        sc.nextLine();
        System.out.print("Enter your address: ");
        address= sc.nextLine();
        System.out.print("Enter contact no: ");
        contact= sc.nextLong();

        System.out.print("Input the marks of Physics, Chemistry, Math: ");
        phy= sc.nextInt();
        chem= sc.nextInt();
        math= sc.nextInt();

        total= phy + chem + math;
        per= (total/300) * 100;

        if(per>=60){
            div="I";
        }
        else if(per>=45 && per<60){
            div="II";
        }
        else if(per>=34 && per<45){
            div="III";
        }
        else{
            div="Fail";
        }

	System.out.println();
        System.out.println("Roll no: " + roll);
        System.out.println("Student Name: " + name);
        System.out.println("Father's name: " + fname);
        System.out.println("Mother's name: " + mname);
        System.out.println("Address: " + address);
        System.out.println("Contact: " + contact);
        System.out.println("Physics: " + phy + " Chemistry: " + chem + " Math: " + math);
        System.out.println("Total Marks: " + total);
        System.out.println("Percentage: " + per);
        System.out.println("Division: " + div);


    }
}


Output:
Enter roll no: 105
Enter your name: Aryan
Enter father's name: Rajdeep
Enter mother's name: Mamta
Enter your address: 56, Padmavati Colony, Nirman Nagar, Jaipur
Enter contact no: 9876598765
Input the marks of Physics, Chemistry, Math: 78 89 67

Roll no: 105
Student Name: Aryan
Father's name: Rajdeep
Mother's name: Mamta
Address: 56, Padmavati Colony, Nirman Nagar, Jaipur
Contact: 9876598765
Physics: 78.0 Chemistry: 89.0 Math: 67.0
Total Marks: 234.0
Percentage: 78.0
Division: I

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8) 5 number input 
>40 
average 
3. 45 to 50 – D
4. 50 to 60 – C
5. 60 to 80 – B
6. Above 80 – A 
otherwise fail 

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

        int m1, m2, m3, m4, m5;
        float total, average;
        String grade;
        System.out.println("Enter marks of the respective subjects: ");
        System.out.print("English: ");
        m1= sc.nextInt();
        System.out.print("Math: ");
        m2= sc.nextInt();
        System.out.print("Physics: ");
        m3= sc.nextInt();
        System.out.print("Chemistry: ");
        m4= sc.nextInt();
        System.out.print("Computer: ");
        m5= sc.nextInt();

        total= m1+ m2+ m3+ m4+ m5;
        average= total/5;

        if(average>80){
            grade= "A";
        }
        else if(average>60 && average<=80){
            grade= "B";
        }
        else if(average>50 && average<=60){
            grade= "C";
        }
        else if(average>45 && average<=50){
            grade= "D";
        }
        else if(average>40 && average<=45){
            grade= "E";
        }
        else{
            grade= "Fail";
        }
        System.out.println("Grade= " + grade);

    }
}


Output:
Enter marks of the respective subjects: 
English: 80
Math: 78
Physics: 92
Chemistry: 64
Computer: 59
Grade= B

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9)three number max used only if else 

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

        int n1, n2, n3, max;
        System.out.print("Enter three numbers: ");
        n1= sc.nextInt();
        n2= sc.nextInt();
        n3= sc.nextInt();

        if(n1>n2 && n1>n3){
            System.out.println(n1 + " is maximum");
        }
        else if(n2>n1 && n2>n3){
            System.out.println(n2 + " is maximum");
        }
        else if(n3>n1 && n3>n2){
            System.out.println(n3 + " is maximum");
        }
        else{
            System.out.println("No single number is maximum");
        }

    }
}

Output:
Enter three numbers: 12 15 13
15 is maximum

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11) 
salalry :
holidays (1) =full salary 
2-5 =5% 
5-14 =10% 
15 =50% 
else =not salary 

output : 
name:
address: 
bank details: 
salary : 
alot :
 holidays 


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

        String name, address, bank_name;
        int sal, holidays;
        long ac_no;
        float alot, cut;

        System.out.print("Enter your name: ");
        name= sc.next();
        sc.nextLine();
        System.out.print("Enter your address: ");
        address= sc.nextLine();
        System.out.print("Enter bank name: ");
        bank_name= sc.nextLine();
        System.out.print("Enter your account no: ");
        ac_no= sc.nextLong();
        System.out.print("Enter your monthly salary: ");
        sal= sc.nextInt();
        System.out.print("Enter no of offs you took: ");
        holidays= sc.nextInt();

        if(holidays<=1){
            cut=0;
        }
        else if(holidays>=2 && holidays<=5){
            cut= 0.05f * sal;
        }
        else if(holidays>=6 && holidays<=14){
            cut= 0.10f * sal;
        }
        else if(holidays==15){
            cut= 0.50f * sal;
        }
        else{
            cut =sal;
        }
        alot= sal-cut;

        System.out.println();
        System.out.println("Name: " + name);
        System.out.println("Address: " + address);
        System.out.println("Bank details: \n" + " Bank name: " + bank_name + " Account number: " + ac_no);
        System.out.println("Salary: " + sal);
        System.out.println("Holidays: " + holidays);
        System.out.println("Salary alloted: " + alot);

    }
}


Output:
Enter your name: Shlok
Enter your address: Vaishali Nagar, Jaipur
Enter bank name: HDFC
Enter your account no: 900078897
Enter your monthly salary: 40000
Enter no of offs you took: 6

Name: Shlok
Address: Vaishali Nagar, Jaipur
Bank details: 
 Bank name: HDFC Account number: 900078897
Salary: 40000
Holidays: 6
Salary alloted: 36000.0

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12)
electric city bill : 
4 unit 
40 
1- 10 = 10% 
11-20 =15% 
21-40 =30% 
50 =50% 

output : 
name:
unit :3 
amout 30 
discout : 10% 
total pay amount : 


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

        String name;
        int unit, bill;
        float discount, total;

        System.out.print("Enter your name: ");
        name= sc.next();
        System.out.print("Enter units of electricity consumed: ");
        unit= sc.nextInt();

        bill= unit * 10;

        if(unit>=1 && unit<=10){
            discount= 0.10f * bill;
        }
        else if(unit>=11 && unit<=20){
            discount= 0.15f * bill;
        }
        else if(unit>=21 && unit<=50){
            discount= 0.30f * bill;
        }
        else if(unit>50){
            discount= 0.50f * bill;
        }
        else{
            discount =0;
        }

        total= bill- discount;

        System.out.println();
        System.out.println("Name: " + name);
        System.out.println("Units consumed: " + unit);
        System.out.println("Bill: " + bill);
        System.out.println("Discount: " + discount);
        System.out.println("Total Amount Payable: " + total);


    }
}


Output:
Enter your name: Rohaan
Enter units of electricity consumed: 45

Name: Rohaan
Units consumed: 45
Bill: 450
Discount: 135.0
Total Amount Payable: 315.0

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13) 
retailer 
customer 
retailer : 
1-15 peices =15% 
16-30 =30% 
31-50 =50% 

output : 
reailer name :asish kumar 
peicies : 30 
discount : 

customer  : 
1000 to 2000 -10% 
100-1000 -5% 
2000--3000 =15% 
3000< 30% 
sout("---------------------");
output : 
customer name : 
contact number : 
payment : 
discout : 
total payment 



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

        String who, rname, cname;
        long contact;
        int piece;
        float total, discount, grand_total;
        System.out.print("Choose retailer/ customer: ");
        who= sc.next();

        if(who.equals("retailer")){
            System.out.print("Enter name: ");
            rname= sc.next();
            System.out.print("Enter no of pieces: ");
            piece= sc.nextInt();
            total= piece * 100;

            if(piece>=1 && piece<=15){
                discount= 0.15f * total;
            }
            else if(piece>=16 && piece<=30){
                discount= 0.30f * total;
            }
            else if(piece>=31){
                discount= 0.50f * total;
            }
            else{
                discount =0;
            }

            grand_total= total - discount;

            System.out.println();
            System.out.println("Retailer name: " + rname);
            System.out.println("Pieces: " + piece);
            System.out.println("Amount: " + total);
            System.out.println("Discount: " + discount);
            System.out.println("Total amount payable: " + grand_total);

        }


        else if(who.equals("customer")){
            System.out.print("Enter name: ");
            cname= sc.next();
            System.out.print("Enter contact no: ");
            contact= sc.nextLong();
            System.out.print("Enter no of pieces: ");
            piece= sc.nextInt();

            total= piece * 100;
            if(total>=100 && total<=1000){
                discount= 0.05f * total;
            }
            else if(total>1000 && total<=2000){
                discount= 0.10f * total;
            }
            else if(total>2000 && total<=3000){
                discount= 0.15f * total;
            }
            else if(total>3000){
                discount= 0.30f * total;
            }
            else{
                discount= 0;
            }

            grand_total= total- discount;

            System.out.println();
            System.out.println("Customer name: " + cname);
            System.out.println("Contact no: " + contact);
            System.out.println("Amount: " + total);
            System.out.println("Discount: " + discount);
            System.out.println("Amount Payable: " + grand_total);
        }
        
        
        else{
            System.out.println("Input mismatch");
        }


    }
}


Output:
Choose retailer/ customer: customer
Enter name: Jay
Enter contact no: 97675434
Enter no of pieces: 12

Customer name: Jay
Contact no: 97675434
Amount: 1200.0
Discount: 120.0
Amount Payable: 1080.0