学过C++,现在看C#,想看"值类型"与"引用类型"的区别,怎么会有错误...

Question

using System;
using System.Collections.Generic;
using System.Text;namespace zhileixing
{
    class Program
    {
        static void Main(string[] args)
        {
            public static void PassesInteger(int fortyFour)
            {
                int fortyFour=44;
                TakesInteger(fortyFour);
                System.Console.WriteLine(fortyFour);
             }
            static void TakesInteger(int i)
            {
                i=33;
            }
        }
            
    }
}

Answer 1

按照这道题，打印出来的应该是33而不是44.如果你想打印出44， TakesInteger(ref int i) , 然后用TakesInteger(ref fortyFour);{ 
                static   void   Main(string[]   args) 
                {                 } 
                        public   static   void   PassesInteger(int   fortyFour) 
                        { 
                                int   fortyFour=44;   //局部变量不能同参数同名。
                                TakesInteger(fortyFour); 
                                System.Console.WriteLine(fortyFour); 
                        } 
                        static   void   TakesInteger(ref int   i) 
                        { 
                                i=33; 
                        }                         
        } 

Answer 2

這樣還不行
 static   void   Main(string[]   args) 
                {                 } 
                        public   static   void   PassesInteger(int   fortyFour) 
                        { 
                                int   fortyFour=44;   //局部变量不能同参数同名。
                                TakesInteger(ref fortyFour); 
                                System.Console.WriteLine(fortyFour); 
                        } 
                        static   void   TakesInteger(ref int   i) 
                        { 
                                i=33; 
                        }                         
        } 

Answer 3

怎么不行？有没有在main里执行PassesInteger？
static  void Main(string[] args)   
{   
  PassesInteger(44);   
}

Answer 4

我从来没这样写过代码,可能又多学了一招.
楼主你为什么在方法中居然又"定义"其它的方法哦?一般来说我没看到这种例子,
很多情况下大概是错的.不知道你这种静态的如何.在不改变的意思的情况下,按我的理解对你提供的例子做一个变化:using   System; 
using   System.Collections.Generic; 
using   System.Text; namespace   zhileixing 
{ 
        class   Program 
        { 
                static   void   Main(string[]   args) 
                {                          
                       int   fortyFour=44; 
                       TakesInteger(fortyFour); 
                       System.Console.WriteLine(fortyFour); 
                } 
                static   void   TakesInteger(int   i) 
                { 
                        i=33; 
                } 
                        
        } 
}如果是这样的话,那么,输出应该是:44
转进去的值仅限影响TakesInteger(int i){...}这个方法的内部.

Answer 5

using   System; 
using   System.Collections.Generic; 
using   System.Text; namespace   zhileixing 
{ 
        class   Program 
        { 
                static   void   Main(string[]   args) 
                {                          
                       int   fortyFour=44; 
                       TakesInteger(fortyFour); 
                       System.Console.WriteLine(fortyFour); 
                } 
                static   void   TakesInteger(int   i) 
                { 
                        i=33; 
                } 
                        
        } 
}输出的是44,引用类型传递的地址,改变它的值时只是改变了它所指向的地址

Answer 6

楼主用的是.net4.0，你没玩过，不懂