将字符数组char[]转化为字符串string
char ch [] = “ABCDEFG”;
string str(ch);//也可string str = ch;
//或者
char ch [] = “ABCDEFG”;
string str;
str = ch;//在原有基础上添加可以用str += ch;
将字符串string转化为字符数组char[]
char buf[10];
string str(“ABCDEFG”);
strcpy(buf, str.c_str());
//strncpy(buf, str.c_str(), 10);
