C#•9mo ago

Write a C# Sharp program to swap two numbers.Test Data:Input the First Number : 5Input the Second

the above is the question

44 Replies

using System;

  public class EX5
  {
    public static void Main(string[] args)
    {
        int NUM1,NUM2,temp;
        
        Console.WriteLine("First Number: ");
        NUM1 = (Console.ReadLine());
        
        Console.WriteLine("Second Number: ");
        NUM2 = (Console.ReadLine());
        
        temp = NUM1;
        NUM1 = NUM2;
        NUM2 = temp;
        
        Console.WriteLine("Numbers after swaping: ");
        Console.WriteLine("Number One: " + NUM1);
        Console.WriteLine("Number Two: " + NUM2);
    }
  }

using System;

  public class EX5
  {
    public static void Main(string[] args)
    {
        int NUM1,NUM2,temp;
        
        Console.WriteLine("First Number: ");
        NUM1 = (Console.ReadLine());
        
        Console.WriteLine("Second Number: ");
        NUM2 = (Console.ReadLine());
        
        temp = NUM1;
        NUM1 = NUM2;
        NUM2 = temp;
        
        Console.WriteLine("Numbers after swaping: ");
        Console.WriteLine("Number One: " + NUM1);
        Console.WriteLine("Number Two: " + NUM2);
    }
  }

this my answer and its not working

Lisa•9mo ago

This doesn't compile because you're assigning a string to an int. console.ReadLine() returns a string. Either you'd have to make NUM1, NUM2 and temp a string, or you'd have to parse the strings. $parse

MODiX•9mo ago

use $tryparse

Lisa•9mo ago

$tryparse

MODiX•9mo ago

When you don't know if a string is actually a number when handling user input, use int.TryParse (or variants, e.g. double.TryParse)

if(int.TryParse("123", out int number))
{
    var total = number + 1;
    Console.WriteLine(total); // output: 124
}

if(int.TryParse("123", out int number))
{
    var total = number + 1;
    Console.WriteLine(total); // output: 124
}

TryParse returns a bool, where true indicates successful parsing. Remarks: - Avoid int.Parse if you do not know if the value parsed is definitely a number. - Avoid Convert.ToInt32 entirely, this is an older method and Parse should be preferred where you know the string can be parsed. Read more here

BrosquareOP•9mo ago

i did parse

Pobiega•9mo ago

Not in the code you pasted above.

BrosquareOP•9mo ago

using System;

namespace Swaping
{
  public class EX5
  {
    public static void Main(string[] args)
    {
        int NUM1,NUM2,temp;
        
        Console.WriteLine("First Number: ");
        NUM1 = int.parse(Console.ReadLine());
        
        Console.WriteLine("Second Number: ");
        NUM2 = int.parse(Console.ReadLine());
        
        temp = NUM1;
        NUM1 = NUM2;
        NUM2 = temp;
        
        Console.WriteLine("Numbers after swaping: ");
        Console.WriteLine("Number One: " + NUM1);
        Console.WriteLine("Number Two: " + NUM2);
    }
  }
}

using System;

namespace Swaping
{
  public class EX5
  {
    public static void Main(string[] args)
    {
        int NUM1,NUM2,temp;
        
        Console.WriteLine("First Number: ");
        NUM1 = int.parse(Console.ReadLine());
        
        Console.WriteLine("Second Number: ");
        NUM2 = int.parse(Console.ReadLine());
        
        temp = NUM1;
        NUM1 = NUM2;
        NUM2 = temp;
        
        Console.WriteLine("Numbers after swaping: ");
        Console.WriteLine("Number One: " + NUM1);
        Console.WriteLine("Number Two: " + NUM2);
    }
  }
}

Pobiega•9mo ago

that wont compile, int.parse isnt int.Parse most programming languages are case sensitive

BrosquareOP•9mo ago

damn /tmp/VvCT1xFkqp.cs(23,49): error CS1002: ; expected /tmp/VvCT1xFkqp.cs(23,49): error CS1513: } expected like am using an online compliler cuz vs code not running any code

Lisa•9mo ago

runs just fine, https://dotnetfiddle.net/uqAXGX

C# Online Compiler | .NET Fiddle

Test your C# code online with .NET Fiddle code editor.

BrosquareOP•9mo ago

well guys do have any suggestions for execercises based learning for c#

Pobiega•9mo ago

$helloworld

MODiX•9mo ago

Interactive course https://learn.microsoft.com/en-us/training/paths/get-started-c-sharp-part-1/ Videos https://dotnet.microsoft.com/learn/videos

Pobiega•9mo ago

https://learn.microsoft.com/en-us/dotnet/csharp/ all these are good resources There is a course platform called Dometrain that currently has their "Intro to C#" course free for the rest of march, so that might be worth checking out if you like video content

BrosquareOP•9mo ago

Thx a lot btw it better if i grinded mainstream C# before unity version?

Pobiega•9mo ago

Unity... where do I even begin... So, unity uses C#, but a slightly lower "language version" than "normal modern .NET" thats not really the problem

BrosquareOP•9mo ago

Bro i be lackin monobehavior

Pobiega•9mo ago

the problem is that unity just does everything differently. It has a different standard library. It compiles to C++ :d So what is "best practice" in normal C# is terrible in Unity, and vice-versa.

BrosquareOP•9mo ago

so what do i do idk where to start

Pobiega•9mo ago

Do you care about learning "normal C#"?

BrosquareOP•9mo ago

and like if i have to code for unity i have to make the whole game

Pobiega•9mo ago

or is your only goal of learning this to make a game in Unity?

BrosquareOP•9mo ago

yes

Pobiega•9mo ago

If Unity is your end-goal, learn unity maybe learn the absolute basics of C# first, like classes, methods etc but dont go deep

BrosquareOP•9mo ago

ok w3schools? up to where?

Pobiega•9mo ago

just be aware! if you do this, you will NOT actually know modern .net development You will not know "normal C#". Thats fine, just keep that in mind

BrosquareOP•9mo ago

so you say if i take the hard path

Pobiega•9mo ago

No its two different paths. One isnt harder than the other they just diverge a lot its the same language, but learning the language itself isnt the problem

BrosquareOP•9mo ago

choice's i cant come back to change

Pobiega•9mo ago

Unlearning what you already know is hard tbh its doable, but its hard old habits die hard etc

BrosquareOP•9mo ago

i wanna be a full fledged C# 3d dev on unity

Pobiega•9mo ago

then thats what you should do

BrosquareOP•9mo ago

unity in a nutshell is just that i have to learn every game dev skill just for programming

Pobiega•9mo ago

https://learn.microsoft.com/en-us/collections/yz26f8y64n7k07?WT.mc_id=dotnet-35129-website Go here. Do all the "learning path" modules imho

BrosquareOP•9mo ago

Pobiega•9mo ago

then go learn unity from people who know unity Also, at that point, $unity is where you go for help

MODiX•9mo ago

https://discord.gg/unity

Pobiega•9mo ago

not here This is a discord for "normal" C# development, not unity

BrosquareOP•9mo ago

am already joined there

Pobiega•9mo ago

we have #game-dev where some people who know unity hang around, but they are the experts on unity

BrosquareOP•9mo ago

thank you for you wisdom i think the best way to learn is to join a dev team of begginers and do each part

Pobiega•9mo ago

¯\_(ツ)_/¯

Jimmacle•9mo ago

the best way to learn would be to have at least one experienced person to learn from

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Write a C# Sharp program to swap two numbers.Test Data:Input the First Number : 5Input the Second