Java Programs Based on if statement

 Programs Based on if statement

1. Write a program to display a greet message according to percentage obtained by student.

import java.util.Scanner;

public class MessageWithGradeElseIfLadder {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

System.out.println("Enter letter grade: ");

String grade = sc.next();

//read user input

if(grade.equals("A")) //passes in A

System.out.println("Excellent!");

else if (grade.equals("B"))

System.out.println("Good");

else if(grade.equals("C") || grade.equals("D"))

System.out.println("Poor");

else if (grade.equals("F"))

System.out.println("Bad");

else

System.out.println("This is not valid at all. ");

sc.close();

}

}

Output:

Enter letter grade: 

A

Excellent!

2. WAP program to print ODD Numbers from 1 to N.

package assignments;

import java.util.Scanner;

public class PrintOddNumbersFrom1ToUserInput {

public static void main(String[] args) {

int n;

Scanner sc = new Scanner(System.in);

System.out.println("Enter any number: ");

n = sc.nextInt();

for(int i =1; i<=n;i++) {

if(i%2!=0)   System.out.print(i+" is odd!");

System.out.println();

}

}

}

Output:

Enter any number: 

10

1 is odd!

3 is odd!

5 is odd!

7 is odd!

9 is odd!

3. WAP to find sum of digits of entered number. 

package assignments;

import java.util.Scanner;

public class SumOfDigits {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

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

int n = sc.nextInt();

int sum = 0;

while(n != 0)

{

sum = sum + n % 10;

n = n / 10;

}

System.out.println("Sum of the digits of your number: "+sum);

}

}

Output:

Enter a number: 

61

Sum of the digits of your number: 7

4. WAP program for Factorial.

package assignments;

import java.util.Scanner;

public class Factorial {

public static void main(String[] args) {

int i, num1, factorial = 1;

Scanner sc = new Scanner(System.in);

System.out.println("Enter any number: ");

num1 = sc.nextInt();

for(i = 1; i<=num1;i++) {

factorial = factorial * i;

}

System.out.println("The factorial of your number is: "+ factorial);

}

}

Output:

Enter any number: 

4

The factorial of your number is: 24

5. Write a program to convert given no. of days into months and days.  (Assume that each month is of 30 days)

package assignments;

import java.util.Scanner;

public class DaysToYearsWeeks10 {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

System.out.println("Enter days: ");

int days = sc.nextInt();

int years=days/365;

int months = days/30;

int week=(days-(years*365))/7;

days=days-((years*365)+(week*7));

System.out.println("Total of years: "+ years);

System.out.println("Total of months: "+ months);

System.out.println("Total of weeks: "+ week);

System.out.println("Total of days: "+ days);

}

}

Output:

Enter days: 

61

Total of years: 0

Total of months: 2

Total of weeks: 8

Total of days: 5