Get that discount - practice c#

Question

I have an issue to solve this practice in c#. Can you check my code and let me know what is wrong. I guess you are already familiar with this task, the discount is given in case that the total amount is 10k or more.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

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

//call the method
Discount;

}
//complete the method declaration
static int Discount()
{
//complete the method body
if (totalPrice >= 10000) {
totalPrice = totalPrice -(0.2*totalPrice);
Console.WriteLine(totalPrice);
}else {
Console.WriteLine(totalPrice);
}

}
}
}

Answer 1

You need to repeat the lesson passed for this task, as you have made too many mistakes.

Answer 2

Ok, thanks. Can you point at least at biggest one? I'm aware that for most tasks there are a few ways to be solved. Thus I need to know did I completely missed out the point or not. Thanks

Answer 3

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

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

//call the method
Discount; //bug 1

}
//complete the method declaration
static int Discount() //bug 2
{
//complete the method body
if (totalPrice >= 10000) {
totalPrice = totalPrice -(0.2*totalPrice); //bug 3
Console.WriteLine(totalPrice);
}else {
Console.WriteLine(totalPrice);
}

Answer 4

Вам нужно написать функцию, (здесь почему-то называют её методом), с параметром, (аргументом целочисленного типа) и соответственно вызывать функцию с аргументом, иначе функция не видит переменную totalPrice так как она определена вне функции.
В C# нельзя дробные числа вычислять с целыми числами без конвертации, то есть привидению к единому типу чисел.
Я не знаю данное задание, так как Про - версия мне не доступна, но если вывод должен быть целым числом, то можно просто переписать вычисление так: 2/10 * totalPrice

Answer 5

Спасибо!

Answer 6

Hi everyone, as a beginner I had a headache from this. Especially because originally there was an deceiving thing in the original method declaration. See below.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

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

//call the method
Discount(totalPrice);
}
//complete the method declaration
static void Discount(int totalPrice)
// !! here it was originally static int Discount() !! it must be static Void
{
//complete the method body
if (totalPrice >= 10000) {
double dis = totalPrice - (0.2 * totalPrice);
totalPrice = Convert.ToInt32(dis);
Console.WriteLine(totalPrice);
}
else {
Console.WriteLine(totalPrice);
}
}
}
}

Answer 7

Thank you for clarification of each part of the code. All makes sense.