QT char*,char[],QString,string互相转换--草稿

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1. string转化为const  char*

string s ="abc";

const  char* c_s = s.c_str();

2.  const  char*转化string

 可以直接赋值即可

const  char* c_s ="abc";

string s(c_s);

  3.  string转化char*

string s ="abc";

char* c;

constint len = s.length();

c =newchar[len+1];

strcpy(c,s.c_str());

  4.  char*转string

char* c ="abc";

string s(c);

  5.  const char*转化char*

constchar* cpc ="abc";

char* pc =newchar[100];//足够长

strcpy(pc,cpc);

  6.  char*转化const char*

   直接赋值即可

char* pc = "abc";

const char* cpc = pc;

参考：

https://blog.csdn.net/superrunner_wujin/article/details/103950512

https://blog.csdn.net/lg1259156776/article/details/52450395