Multiples of 3

Question

You are an elementary school teacher and explaining multiplication to students.
You are going to use multiplication by 3 as your example.
The program you are given takes N number as input. Write a program to output all numbers from 1 to N, replacing all numbers that are multiples of 3 by "*".

Sample Input
7

Sample Output
12*45*7

I don't need the code I just don't under stand what its asking and what I am supposed to do. Also where did the 12 and 45 come from

Answer 1

Never mind, I realized that it was counting the numbers 1, 2, skipped 3, counted 4, and then 5

Answer 2

Well. you're correct!
they simply replaced 3 with *
you also gonna need Console.write(); to print the numbers on the same line.

Answer 3

using System;
using System.Collections.Generic;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
int number = Convert.ToInt32(Console.ReadLine());
for (int i=1;i<=number;i++)

if (i%3==0)
{Console.WriteLine("*"); }
else
{ Console.WriteLine(i);}
}
}
}

Answer 4

Don't give up Aleksei Gorlanov

Answer 5

This code outputs exactly what is asked by the problem but is not passing all the tests.

using System;
using System.Collections.Generic;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
// transform to integer
int number = Convert.ToInt32(Console.ReadLine());

//your code goes here
for(int i = 1; i < number; i++){
if(i % 3 == 0){
Console.WriteLine("*");
}else{
Console.WriteLine(i);
}
}
Console.WriteLine(number);
}
}

Answer 6

i’ve done 3 free test, but it shows that i have mistake in pro tests. don’t know what to do

Answer 7

using System;
using System.Collections.Generic;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
int number = Convert.ToInt32(Console.ReadLine());

for(int i =1;i<=number;i++)
{
string j = i.ToString();

j = (i%3==0)? "*" : j ;

Console.Write(j);
}

}
}
}

Answer 8

@Elias Prado I wrote exactly your code and the tests pass, but I get an error message that the code is wrong.
This is the code I wrote:

namespace test3
{
class Program
{
static void Main(string[] args)
{
int num = Convert.ToInt32(Console.ReadLine());

for (int x = 1; x < num ; x++)
{
if (x % 3 == 0)
{
Console.Write('*');
}else Console.Write(x);
}
Console.Write(num);
}
}
}