Help with loop

Question

Please explain someone what is int i here

You are given code that takes the number of students who enter the university as input. Let's greet them!
Task
Complete the program to output "Welcome" for each student.

import java.util.Scanner;

public class Program
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int n = scanner.nextInt();
for (int i = 0; i < n; i ++) {
System.out.println("Welcome");
}

}
}

Answer 1

Summary:
Int i in that programm's simply a value to count the Times you did a Action and give you a numeric value to make a while question.

Also "int n" is the numeric value of how many students we have and "int i" is a value to Count and compare. Let's explain it with an example.
We have 9 students also n = 9, int i start with 0 and every time the Loop gets tho one time the value i get increased by 1, so:
1. Loop: i=0
2. Loop: i=1
3. Loop: i=2
4. Loop: i=3
And to Escape the loop we have the condition that i is smaller than n. So when we got tho the loop 9 times 'ur counter value have the value of 8, which's the Last value under 9, so the Loop stops.
edit: Sry when it's a bit unreadable and roughly made answer, we have midnight here. 😅

Answer 2

Thank you!!!

Answer 3

i < n means that i is strictly less than n, so i runs from its initial value through (n-1). And the other answer explains it well with example. If you can find time, I would highly recommend going over high school maths glossary, that would really help with translating your program logic into code.

Answer 4

Felix Alcor Great answer! Explanations supported with example small input test cases, I think everyone else should follow this same template of giving solutions here to Q&A posts.