C++ string转const char 和const char *的方法分享

(认知有限，如有不妥，还请告知，欢迎讨论)

#include
#include
#include

using std::string;
using std::cout;
using std::endl;

int main()
{
    const char* sample_s = "sample pkc";
    cout <<"The type of " << '"' << sample_s << '"' << " is " << typeid(sample_s).name() << "n"<< endl;

    string sample_str = "sample str";
    cout <<"The type of " << '"' << sample_str << '"' << " is " << typeid(sample_str).name() << "n"<< endl;

    const char* s1 = "beginning pkc";
    cout <<"The type of " << '"' << s1 << '"' << " is " << typeid(s1).name() << "n"<< endl;

    //const char* 转 string
    string str_1(s1);
    cout <<"The type of " << '"' << str_1 << '"' << " now is " << typeid(str_1).name() << "n"<< endl;

    string str_2 = "beginning string";
    cout <<"The type of " << '"' << str_2 << '"' << " is " << typeid(str_2).name() << "n"<< endl;

    // string 转 const char*
    const char* s2=str_2.c_str();
    cout <<"The type of " << '"' << s2 << '"' << " now is " << typeid(s2).name() << "n"<< endl;

    return 0;
}
输出结果：

case CCommandLineInfo::FileNew:

           if (!AfxGetApp()->OnCmdMsg(ID_FILE_NEW, 0, NULL, NULL))

                    OnFileNew();

           if (m_pMainWnd == NULL)

                    bResult = FALSE;

           break;

CFrameWnd* CDocTemplate::CreateNewFrame(CDocument* pDoc, CFrameWnd* pOther)

{

if (!pFrame->LoadFrame(m_nIDResource,……..)

           return NULL;

}

The type of "sample pkc" is PKc

The type of "sample str" is NSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE

The type of "beginning pkc" is PKc

The type of "beginning pkc" now is NSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE

The type of "beginning string" is NSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE

The type of "beginning string" now is PKc

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