10 | C# Online Compiler

10 by khải`232

using System;

class Program
{
    static void Main(string[] args)
    {
		// Nhập hệ số a, b, c
        Console.WriteLine("Nhập hệ số a: ");
        double a = double.Parse(Console.ReadLine());
        Console.WriteLine("Nhập hệ số b: ");
        double b = double.Parse(Console.ReadLine());
        Console.WriteLine("Nhập hệ số c: ");
        double c = double.Parse(Console.ReadLine());
		double delta = b*b-4*a*c;
		 if (delta < 0)
            Console.WriteLine("Phương trình vô nghiệm!");
		else if (delta == 0)
            Console.WriteLine("Phương trình có nghiệm kép x = {0}", -b / (2 * a));
        else
		{
            double x1 = (-b + Math.Sqrt(delta)) / (2 * a);
            double x2 = (-b - Math.Sqrt(delta)) / (2 * a);
            Console.WriteLine("Phương trình có hai nghiệm x1 = {0} và x2 = {1}", x1, x2);
		}
    }
}

​x
 
using System;
​
class Program
{
    static void Main(string[] args)
    {
        // Nhập hệ số a, b, c
        Console.WriteLine("Nhập hệ số a: ");
        double a = double.Parse(Console.ReadLine());
        Console.WriteLine("Nhập hệ số b: ");
        double b = double.Parse(Console.ReadLine());
        Console.WriteLine("Nhập hệ số c: ");
        double c = double.Parse(Console.ReadLine());
        double delta = b*b-4*a*c;
         if (delta < 0)
            Console.WriteLine("Phương trình vô nghiệm!");
        else if (delta == 0)
            Console.WriteLine("Phương trình có nghiệm kép x = {0}", -b / (2 * a));
        else
        {
            double x1 = (-b + Math.Sqrt(delta)) / (2 * a);
            double x2 = (-b - Math.Sqrt(delta)) / (2 * a);
            Console.WriteLine("Phương trình có hai nghiệm x1 = {0} và x2 = {1}", x1, x2);
        }
    }
}
​

Compilation error (line 4, col 7): The type or namespace name 'Json' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 36, col 21): The type or namespace name 'JsonSchema' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 51, col 28): The type or namespace name 'JsonSchema' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 22, col 26): The name 'JsonSchema' does not exist in the current context
Compilation error (line 36, col 51): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 37, col 25): The type or namespace name 'Dictionary<,>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 37, col 44): The type or namespace name 'JsonSchema' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 39, col 28): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 40, col 31): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 43, col 28): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 44, col 31): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 51, col 59): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 52, col 15): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 53, col 17): The name 'MetaSchemas' does not exist in the current context
Compilation error (line 56, col 25): The type or namespace name 'Dictionary<,>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 56, col 44): The type or namespace name 'JsonSchema' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 59, col 30): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 60, col 23): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 67, col 32): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 68, col 23): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 75, col 31): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 76, col 23): The name 'SchemaValueType' does not exist in the current context
Compilation error (line 78, col 28): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 79, col 25): The type or namespace name 'JsonSchemaBuilder' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 83, col 19): The type or namespace name 'Dictionary<,>' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 83, col 38): The type or namespace name 'JsonSchema' could not be found (are you missing a using directive or an assembly reference?)

Last Run:	10:18:09 pm
Compile:	0.007s
Execute:	0s
Memory:	0b
CPU:	0s

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