C++ char*，const char*，string的相互转换

mildcat

C++ char*，const char*，string的相互转换


1. string转const char*

string s ="abc";
consTChar* c_s = s.c_str();
2. const char*转string
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constchar* c_s ="abc";
" \8 V' _9 P# u1 ]* e2 ^2 Xstring s(c_s);
3. string转char*
, t0 t$ w+ b& f3 }# g4 N& ~! vstring s ="abc";
0 C3 @) ]* S/ m. Hchar* c;
4 f! ?/ ^( w" B9 N0 j% dconstint len = s.length();
c =newchar[len+1];
strcpy(c,s.c_str());
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; S" c- G! \5 g! f 4. char*转string

* m! r+ T3 {6 \) d) ochar* c ="abc";
string s(c);
5. const char*转char*

6 {3 O  Q* R5 Wconstchar* cpc ="abc";
char* pc =newchar[100];//足够长
strcpy(pc,c
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