Re: [cpp] 关于const char * const &

[孙华明]

const char* const& a；
这个声明是什么意思啊？
这么复杂！
  ----- Original Message ----- 
  From: ling 
  To: C++ Discuss Group 
  Sent: Wednesday, July 19, 2006 4:12 PM
  Subject: Re: [cpp] 关于const char * const &


  不好意思，我知道原因了，应该是头文件iostream中有一个同名的函数min.

  ----- Original Message ----- 
    From: ling 
    To: C++ Discuss Group 
    Sent: Wednesday, July 19, 2006 5:04 PM
    Subject: [cpp] 关于const char * const &



    请问下面代码的函数min和min1有什么区别啊。
    为什么函数min取得的比较结果不对呢？另外如果数组a,b的声明
    前面加上const的话，函数min取得的结果就对了。
    函数min1不管有没有const都能得到正确的结果。

    #include <cstring>
    #include <iostream>
    using namespace std;

    const char* const& min(const char* const& a, const char* const& b)
    {
     cout << "a = " << a << endl;
     cout << "b = " << b << endl;
     return (strcmp(a, b) < 0) ? a : b;
    }

    const char* const min1(const char* const a, const char* const b)
    {
     return (strcmp(a, b) < 0) ? a : b;
    }

    int main()
    {
     char a[] = "123";
     char b[] = "456";
     
     cout << min(a, b) << endl;
      cout << min1(a, b) << endl;
    }


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