C++ char*，const char*，string的相互转换

mildcat

C++ char*，const char*，string的相互转换
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1. string转const char*
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string s ="abc";
3 G' e- t. z# tconsTChar* c_s = s.c_str();
2. const char*转string
   直接赋值即可
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constchar* c_s ="abc";
string s(c_s);
9 b% w, G8 C' Y/ u' g 3. string转char*
string s ="abc";
2 Q1 T+ j( {) echar* c;
& F1 u( v- N9 W. ^. aconstint len = s.length();
c =newchar[len+1];
strcpy(c,s.c_str());

2 W( Q+ I" ]: y6 t, O0 W 4. char*转string
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( \! _" f* G# L. w1 J+ {9 wchar* c ="abc";
* N. b7 v$ B5 q# Jstring s(c);
2 E3 W1 z. J0 }! ^' B4 T% @5 p 5. const char*转char*

6 q5 k" z3 B# Iconstchar* cpc ="abc";
char* pc =newchar[100];//足够长
3 t. H! d5 ~! s2 L5 N$ ~strcpy(pc,c