For Loop Part 1

Part of the Fundamentals section of Coddy's Java journey. Lesson 42 of 73.

Sometimes when programming, it's necessary to perform the same or almost the same operation a couple of times.

To prevent writing the same thing over and over again, we can use Loops.

The for loop has the following syntax:

for (initialization; condition; update) {
    code
}

The initialization, condition and update determine what is the start value and what is the end value.

For example, loop from 0 to 5 (not including):

for (int i = 0; i < 5; i++) {
    System.out.println(i);
}

It will execute the print statement 5 times:

Loops have many use cases. For example, let's sum all the numbers from 1 to 100:

int sum_numbers = 0;
for (int i = 1; i <= 100; i++) {
    sum_numbers += i;
}
System.out.println(sum_numbers);

This will first loop through all numbers between 1 and 100 (including 100 because of <= sign) and sum all of them, then it will print the sum_numbers variable

Challenge

Beginner

Read an integer n (the starter code already does this). Use a for loop to print "Hello Coddy: " and the i value for every number from 3 to n, both included.

For example, if n is 6, the output is:

Hello Coddy: 3
Hello Coddy: 4
Hello Coddy: 5
Hello Coddy: 6

If n is 27, the loop prints 25 lines, from Hello Coddy: 3 to Hello Coddy: 27.

Try it yourself

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        // Write code here
    }
}