瑕佹竻绌轰竴涓?stringstream 瀵硅薄涓殑鍐呭锛屽彲浠ヤ娇鐢ㄥ涓嬫柟娉曪細

1. 浣跨敤 str("") 鏂规硶锛氬彲浠ョ洿鎺ュ皢涓€涓┖瀛楃涓茶祴鍊肩粰 stringstream 瀵硅薄锛岃繖鏍峰氨鍙互娓呯┖鍏朵腑鐨勫唴瀹广€?/li>

std::stringstream ss;
ss << "Hello, World!";
std::cout << ss.str() << std::endl;  // 杈撳嚭: Hello, World!

ss.str("");  // 娓呯┖ stringstream 瀵硅薄
std::cout << ss.str() << std::endl;  // 杈撳嚭: 

2. 浣跨敤 str(std::string()) 鏂规硶锛氬彲浠ヤ娇鐢ㄤ竴涓┖鐨?std::string 瀵硅薄鏉ヨ皟鐢?str 鏂规硶锛屼篃鍙互娓呯┖ stringstream 瀵硅薄鐨勫唴瀹广€?/li>

std::stringstream ss;
ss << "Hello, World!";
std::cout << ss.str() << std::endl;  // 杈撳嚭: Hello, World!

ss.str(std::string());  // 娓呯┖ stringstream 瀵硅薄
std::cout << ss.str() << std::endl;  // 杈撳嚭: 

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