小编Ana*_*aya的帖子

我试图解决二次方程.我有double类型的所有变量,以及s变量Nan的结果.

double a, b, c, x1, d, x2, s ;
Console.WriteLine("Enter a value a: ");
a = double.Parse(Console.ReadLine());
Console.WriteLine("Enter a value b: ");
b = double.Parse(Console.ReadLine());
Console.WriteLine("Enter a value c: ");
c = double.Parse(Console.ReadLine());

d = b * b - 4 * a * c;

Console.WriteLine("solution: ");

Console.WriteLine("1) Substitute the values entered in the equation " + "{0} * x^2 + {1} * x + {2} = 0 ", a, b, c);
Console.WriteLine("2) ?alculate the discriminant: d = b * …