您可以std::string使用重载+和+=运算符连接。使用+运算符:
std::string hello = "Hello"; std::string world = "world"; std::string helloworld = hello + world; // "Helloworld"
使用+=运算符:
std::string hello = "Hello"; std::string world = "world"; hello += world; // "Helloworld"
您还可以附加C字符串,包括字符串文字:
std::string hello = "Hello"; std::string world = "world"; const char *comma = ", "; std::string newhelloworld = hello + comma + world + "!"; // "Hello, world!"
您还可以使用push_back()推回单个chars:
std::string s = "a, b, "; s.push_back('c'); // "a, b, c"
也有append(),这很像+=:
std::string app = "test和 "; app.append("test"); // "test和 test"