using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication2
{
    class Program
    {
        delegate double ProcessDelegate(double param1, double param2);
        static double Multiply(double param1, double param2)
        {
            return param1 * param2;
        }
        static double Divide(double param1, double param2)
        {
            return param1 / param2;
        }
        static void Main(string[] args)
        {
            ProcessDelegate process;
            string input = Console.ReadLine();
            int commaPos = input.IndexOf(',');
            double param1=Convert.ToDouble(input.Substring(0,commaPos));
            double param2=Convert.ToDouble(input.Substring(commaPos+1,
                                                   input.Length-commaPos-1));
            input = Console.ReadLine();
            if (input == "M")
                process = new ProcessDelegate(Multiply);
            else ;
            Console.WriteLine(process(param1,param2));

        }
    }
}
这段代码哪里错了 编译器错误显示"使用了未赋值的局部变量process"
就这唯一一个错误

Console.WriteLine(process(param1,param2));  这里本来就是使用了未初始化的变量  有啥疑问吗

为啥子哦！我连namespace是什么都不知道

这是什么语言啊？C#、C++、和C到底有何区别啊？

if (input == "M")
                process = new ProcessDelegate(Multiply);
            else ;
            Console.WriteLine(process(param1,param2));
如果没执行if(input=="M")

那么 process 就没赋值了..发现异常首先自己想想先,确实发现不了在问吧

这个问题我已经知道了

我懂了