C++ char*，const char*，string的相互转换

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C++ char*，const char*，string的相互转换

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1. string转const char*

' C. B/ C9 I- ?: J7 @4 u( f* Vstring s ="abc";
consTChar* c_s = s.c_str();
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   直接赋值即可

constchar* c_s ="abc";
string s(c_s);
3. string转char*
string s ="abc";
) C" q, u" P2 P1 Echar* c;
constint len = s.length();
c =newchar[len+1];
strcpy(c,s.c_str());
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( s0 D8 n' b( B" |2 B$ V 4. char*转string

char* c ="abc";
string s(c);
: x; o" W& m- H5 @5 R# _2 v; \ 5. const char*转char*
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5 p: p& I) [0 v$ P4 g1 bconstchar* cpc ="abc";
char* pc =newchar[100];//足够长
strcpy(pc,c
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