从C中的控制台输出获取先前打印的行

Question

I'm making a very simple console text editor. In order to move the cursor to the end of the previous line when I backspace at the beginning of a line, I need to read an already printed line from the console, then get its length. How would I go about making this work?

Answer 1

There is no way to do this using scanf() and printf() ; the program would need to keep track of what it prints. However, it is also impossible to edit previously printed screen lines using only the standard I/O functions - in order to do that, you'd need to use eg ncurses .

Answer 2

将要打印的每个元素存储在编辑器中的char数组中，因为您可能必须从头开始或在中间返回，而不仅仅是一行。