C#单利计算器开关错误

Question

我正在尝试制作一个简单的兴趣计算器，其中一个人输入他们想要计算的数字（1-4），然后输入给定的数字并获得缺失的变量。

代码：

using System;
using System.Convert;
public class InterestCalculator {
    static public void Main(string [] args) {
        int final, initial, rate, time, input;
        Console.WriteLine("What do you want to calculate? n 1. Final amount after interest. n 2. Initial amount after interest. n 3. Interest rate. n 4. Time passed");
        input = Convert.ToInt32(Console.ReadLine());
        switch (input){
            case 1:
                Console.WriteLine("Enter the initial amount.");
                initial = Convert.ToInt32(Console.ReadLine());
                Console.WriteLine("Enter the interest rate.");
                rate = Convert.ToInt32(Console.ReadLine());
                Console.WriteLine("Enter the time passed.");
                time = Convert.ToInt32(Console.ReadLine());
                final = initial * rate * time;
                Console.WriteLine("$" + final + " is the final amount after interest.");
                break;
            case 2:
                Console.WriteLine("Enter the final amount.");
                final = Convert.ToInt32(Console.ReadLine());
                Console.WriteLine("Enter the interest rate.");
                rate = Convert.ToInt32(Console.ReadLine());
                Console.WriteLine("Enter the time passed.");
                time = Convert.ToInt32(Console.ReadLine);
                initial = final/(rate * time);
                Console.WriteLine("$" + initial + " is the initial amount before interest.");
                break;
            case 3:
                Console.WriteLine("Enter the final amount.");
                final = Convert.ToInt32(Console.ReadLine());
                Console.WriteLine("Enter the initial amount.");
                initial = Convert.ToInt32(Console.ReadLine());
                Console.WriteLine("Enter the time passed.");
                time = Convert.ToInt32(Console.ReadLine);
                rate = final/(initial * time);
                Console.WriteLine("%" + initial + " per time cycle is the interest rate");
                break;
            case 4:
                Console.WriteLine("Enter the final amount.");
                final = Convert.ToInt32(Console.ReadLine());
                Console.WriteLine("Enter the initial amount.");
                initial = Convert.ToInt32(Console.ReadLine);
                Console.WriteLine("Enter the interest rate.");
                rate = Convert.ToInt32(Console.ReadLine());
                time = final/(initial * rate);
                Console.WriteLine(initial + " cycles is the amount of time passed.");
                break;}
            default:
                Console.WriteLine("Invalid input.");
        }
    }
}

我在编译过程中不断收到这个错误（使用mono）：

error CS1502: The best overloaded method match for System.Convert.ToInt32(bool) has some invalid arguments
error CS1503: Argument `#1' cannot convert `method group' expression to type `bool'
error CS1502: The best overloaded method match for `System.Convert.ToInt32(bool)' has some invalid arguments
error CS1503: Argument `#1' cannot convert `method group' expression to type `bool'
error CS1502: The best overloaded method match for `System.Convert.ToInt32(bool)' has some invalid arguments
error CS1503: Argument `#1' cannot convert `method group' expression to type `bool'

Answer 1

您的一个Console.ReadLine()没有括号。因此，您传递的是方法，而不是调用它。

Answer 2

大多数地方只有

Console.ReadLine而不是Console.ReadLine（）

签入代码。例如

案例2

time = Convert.ToInt32(Console.ReadLine);

纠正所有这些行。

此外，建议先将输入输入到局部变量中，然后尝试转换。