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Question

printf("Hello%cWorld\n", '\r');

Outputs:

World

Because '\\r' moves the cursor to the beginning of the line

Can I trust that all terminals have this behavior?

Answer 1

lib curses会告诉你终端的功能。

Answer 2

.0x0d in ASCII encoding is '\\r', in this case

printf("Hello%cWorld\n", 0x0d);

is equal to

printf("Hello\rWorld\n");

A common C programming error is to assume a particular encoding is in use when, in fact, another one holds.

However, it works on most computers as @Joachim Pileborg said.

BUT I suggest to use '\\r' instead of 0x0d, for portability and the latter looks like a magic number, which makes others who read your code even yourself feel confused someday.