为什么我一直得到:不能隐式转换类型字符串到类型bool？

Question

我是C#的新手,我无法弄清楚这段代码有什么问题.我正在创建一个测验,如果答案是正确的,我试图说得好,但它不断提出不能隐式地将类型字符串转换为类型bool.

这是我的代码:

{
    int score = 0;
    Console.WriteLine(" What is your name?");
    string name = "";
    name = Console.ReadLine();

    Console.WriteLine("Hello " +name+ " and welcome to the Formula 1 quiz.");
    Console.ReadLine();

    Console.WriteLine("Question 1: How many races has Michael Schumacher won.");
    Console.ReadLine();

    Console.WriteLine("a) 91");
    Console.WriteLine("b) 51");
    Console.WriteLine("c) 41");
    Console.WriteLine("d) 31");

    Console.ReadLine();
    string answer = Console.ReadLine();

    if (answer = a) Console.WriteLine("Well done");
    else Console.WriteLine("Wrong answer");
}

Answer 1

更改:

if (answer =  a)

至

if (answer ==  "a")