char * 与 string 之间的转换

(1)char * 转 string

char * ch = "abs";

string s = ch;

(2)string 转 char *

string s = "abs";

char * ch = s.c_str();

(3)const char * 转 char *

const char * ch_const = "abs";

char * ch = (char *)ch_const;

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