大多数情况下你只用printf（％D）;

Most often you just use printf("%d");

http://en.wikipedia.org/wiki/Printf

如果您需要在缓冲区中，您可以用sprintf，但你经常转换为字符串，而不是将其写入到文件或输出设备？

You can use sprintf if you need it in a buffer, but how often do you convert to a string and not write it to a file or output device?