I don't understand how to use Modulus [duplicate] - modulus

Question

This question already has answers here:
How Does Modulus Divison Work
(19 answers)
Closed 5 years ago.
I am brand new to coding and I am having a lot of trouble just getting this to work:
Declare 2 integer variables. Prompt the user for two numbers.
Store the values into variables using the Scanner object.
If the second number is a multiple of the first number, display " is a multiple of ". Otherwise display " is not a multiple of "
I have this code below then i am lost:
int number1, number2;
System.out.println("Enter a number:");
number1 = keyboard.nextInt();
System.out.println("Enter a Number:");
number2 = keyboard.nextInt();

Answer 1

Modulus is the remainder of dividing 2 numbers. If number2 is a multiple of number1, dividing them will have a remainder 0, otherwise not.
package test;
import java.util.Scanner;
public class MyTest {
public static void main(String[] args) {
Scanner keyboard = new Scanner(System.in);
int number1, number2;
System.out.println("Enter a number:");
number1 = keyboard.nextInt();
System.out.println("Enter a Number:");
number2 = keyboard.nextInt();
int mod = number2 % number1;
if (mod == 0) {
System.out.println(number2 + " is a multiple of " + number1);
} else {
System.out.println(number2 + " is not a multiple of " + number1);
}
}
}

Answer 2

Modulus simply gives you the remainder of the division of two numbers. For eg : 4/3 gives the remainder as 1 similarly in programmatic way you can try 4%3 which two will give the same response. Added a python code snippet below :
a = int(input("Enter first no."))
b = int(input("Enter second no."))
print("Modulus operation a%b gives : ", (a % b))
print("Is ", a, " multiple of ", b)
print((a%b) == 0)

Answer 3

If number1 is a multiple of number2 than it will devide number2 with remainder 0,
for ex if 4 is multiple of 2 than 4%2==0, is true ,
here % is modulus operator that returns remainter of the division of two numbers :::
In your case if number1 is multiple of number2 than
Number1%number2==0 (must);
Than your program should be like this:
If(number1%number2==0)
{
System.out.println("number1 is a multiple of number 2");
}
Else
System.out.println("not a multiple");

Answer 4

i am lost
Suppose you are in a competition to eat chocolates and the rule is:
Eat three chocolates at the same time
If you are given:
1 chocolate, you will not eat, and 1 chocolate will be left
2 chocolates, you will not eat, and 2 chocolates will be left
3 chocolates, you eat once, and 0 chocolates will be left
4 chocolates, you eat once, and 1 chocolate will be left
5 chocolates, you eat once, and 2 chocolates will be left
6 chocolates, you eat twice, and 0 chocolates will be left
7 chocolates, you eat twice, and 1 chocolate will be left
...
100 chocolates, you eat 33 times, 1 chocolate will be left
...
1502 chocolates, you eat 500 times, 2 chocolates will be left
The number of chocolates left each time is called Modulus is Mathematics, a powerful operation in computers.
As you can tell, you will always be left with less than 3 chocolates (0 or 1 or 2) anytime.
Hence, x modulus y is always less than y in the range 0 to y-1.
In programming, the modulus operator is %.
So, if we write the way you ate chocolates using the modulus operator %, it looks like:
1 % 3 = 1
2 % 3 = 2
3 % 3 = 0
4 % 3 = 1
5 % 3 = 2
6 % 3 = 0
7 % 3 = 1
...
100 % 3 = 1
...
1502 % 3 = 2
Now tell me, are you lost?