// CharConvert.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include<iostream>
#include<afx.h>
#include<string>
using namespace std;
int _tmain(int argc, _TCHAR* argv[])
{
 //此方法适用于“多字节” 否则会出现'strcpy' : cannot convert parameter 2 from 'unsigned short *' to 'const char *'
 /*CString str("Hello zzu");
 cout<<"the CString is "<<str<<endl;
 char a[100];
 strcpy(a,str);
 cout<<"the convert to char * is "<<a<<"(char *)"<<endl;*/

 //CString 转换成string
 //  CString c_str1("Hello Zhengzhou University");
 //string str;
 //str=c_str1.GetBuffer(0);
 //c_str1.ReleaseBuffer();  //否则就没有释放缓冲区所占的空间
 //cout<<str<<endl;
 //cout<<"\n"<<c_str1<<endl;

 //string 转换成CString
 /*string str1("Hello College of Information Engineering");
 CString c_str2;
 c_str2=str1.c_str(); //c_str()：生成一个const char*指针，指向以空字符终止的数组。
 cout<<"the CString is "<<c_str2<<endl;
 cout<<"the string is "<<str1<<endl;*/

 //string转换成const char*
 //方法一：
 //string str2("Hello College of Information Engineering");
 //const char * str3;  //常数指针
 //str3=str2.c_str();
 //cout<<"string  is  "<<str2<<endl;
 //cout<<"const char is "<<str3<<endl;
 

 //方法二:
 // /* string str("Hello College of Information Engineering");
 //const char * c_str;
 //c_str=str.data();
 //cout<<"string is  "<<str<<endl;
 //cout<<"const char is"<<c_str<<endl;*/
 
 
 
 //string 直接转换成char*
 ///*string s1 = "abcdefg";
 //char *data;
 //int len = s1.length();
 //data = (char *)malloc((len)*sizeof(char));
 //s1.copy(data,len,0);
 //cout<<len<<endl;
 //cout<<data<<endl;*/
 
  
    
 //string.copy()的用法
   //size_t length;
  //  char buffer[8];
  // string str("Test string......");
  //  
  // length=str.copy(buffer,7,6);    //从buffer6，往后数7个，相当于[ buffer[6], buffer[6+7] ）
  // buffer[length]='\0';            //加上'\0'使得buffer就到buffer[length]为止；
 
  // cout <<"buffer contains: " << buffer <<endl;
  //char * 转换成string


 //char *到string
  /* char * c_str="zzu";
 string str(c_str);
 cout<<"the c_str "<<c_str<<endl;
 cout<<"the string is"<<str<<"and length is "<<str.length()<<endl;*/


 //char a[]="asd";
 //cout<<strlen(a)<<endl; //为什么显示的是3，不是有一个\0吗

 //char * 到CString
  
 ////char * c_str1="zzu";
 ////CString str; //可以直接转换，因为CString存在重载(在多字节字符集下适用)
 ////str.Format("%s",c_str1);
 ////cout<<"the c_str1 is"<<c_str1<<endl; 
 ////cout<<"the CString is"<<str<<endl;



 //方法1：使用API：WideCharToMultiByte进行转换（使用过，有效）
   //CString str= CString("This is an example!");
   //int n = str.GetLength(); //按字符计算，str的长度
   //int len = WideCharToMultiByte(CP_ACP,0,str,n,NULL,0,NULL,NULL);//按Byte计算str长度
   //char *pChStr = new char[len+1];//按字节为单位
   //WideCharToMultiByte(CP_ACP,0,str,n,pChStr,len,NULL,NULL);//宽字节转换为多字节编码
   // pChStr[len] = '\0';//不要忽略末尾结束标志
   //用完了记得delete []pChStr,防止内存泄露
 return 0;
}

CString s; 
int i = 64; 
s.Format("%d", i)