C#•4w ago

Help

just trying to create a programme that adds up an even and an odd together

14 Replies

SG97•4w ago

what's the meaning of the first if

ٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴ•4w ago

even number divided by two leaves no remainders

SG97•4w ago

it's an empty if if (even % 2 == 0) or are you trying to check that the even is even and the odd is odd don't really like this style of if usage though but, what's the actual problem

sushiman•4w ago

do you want to check if the user wrote an odd and an even number? i don't really get what you tried to do

TizzyT•4w ago

Console.WriteLine("Enter one even number and one odd number.");

int even = int.Parse(Console.ReadLine());
int odd = int.Parse(Console.ReadLine());

if (even % 2 == 0)
  if (odd % 2 == 1)
    Console.WriteLine(even + odd);

Console.WriteLine("Enter one even number and one odd number.");

int even = int.Parse(Console.ReadLine());
int odd = int.Parse(Console.ReadLine());

if (even % 2 == 0)
  if (odd % 2 == 1)
    Console.WriteLine(even + odd);

MutableString•4w ago

it would be wise to give an indication to the user if the validation of oddness/evenness fails

TizzyT•4w ago

int even = RequestNumber("Enter an Even number:", i => i % 2 == 0, "Input not Even!");
int odd = RequestNumber("Enter an Odd number:", i => i % 2 == 0, "Input not Odd!");

Console.WriteLine(even + odd);

static int RequestNumber(string message, Func<int, bool>? constraint = null, string? constraint_message = null)
{
    while (true)
    {
        Console.WriteLine(message);
        string? input = Console.ReadLine();
        if (int.TryParse(input, out int result))
        {
            if (constraint is null || constraint(result))
            {
                return result;
            }
            else if (constraint_message is not null)
            {
                Console.WriteLine(constraint_message);
                continue;
            }
        }
        Console.WriteLine("Invalid input.");
    }
}

int even = RequestNumber("Enter an Even number:", i => i % 2 == 0, "Input not Even!");
int odd = RequestNumber("Enter an Odd number:", i => i % 2 == 0, "Input not Odd!");

Console.WriteLine(even + odd);

static int RequestNumber(string message, Func<int, bool>? constraint = null, string? constraint_message = null)
{
    while (true)
    {
        Console.WriteLine(message);
        string? input = Console.ReadLine();
        if (int.TryParse(input, out int result))
        {
            if (constraint is null || constraint(result))
            {
                return result;
            }
            else if (constraint_message is not null)
            {
                Console.WriteLine(constraint_message);
                continue;
            }
        }
        Console.WriteLine("Invalid input.");
    }
}

vl4do•4w ago

why are you overcomplicating things

TizzyT•4w ago

because I made it simple originally

ٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴ•4w ago

yeh im not this advanced thanks guys will try work on it idk what parse is shoulf check it out

sushiman•4w ago

seeing the level of the original problem, i think its a bit too advanced for that xd int.parse is converting string to int

ٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴ•3w ago

i thought that was converttoint32

sushiman•3w ago

it works too ofc but basically the class Convert can convert string to any type, so basically if u have a custom class/struct it can convert string into it as for int.Parse is the int's own convert function

ٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴ•3w ago

ah so there are specific comversions makes sende

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