C# 单利计算器开关报错

Question

我正在尝试制作一个单利计算器，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（使用单声道）：

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

嗯，您的 Console.ReadLine() 之一没有括号。所以你传递的是方法而不是调用它。

Answer 2

大部分地方你只有

Console.ReadLine instead of Console.ReadLine()

签入代码。例如-

案例二

time = Convert.ToInt32(Console.ReadLine);

更正所有这些行。

另外，建议先将输入获取到局部变量，然后尝试转换。

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