I have been working with PROS on a project that it has made possible but i have run into a slight issue. This (example) line:
printf("Hello world \n");
seems to return something it should not:
Hello world
Hello world
Hello world
Hello world
etc.
I am wondering if it is my incorrect use of carriage return or some other mistake that is causing this.
You are actually using a line feed or new line character (“\n”) instead of a carriage return (“\r”). The short story is that you need this:
printf("Hello world\r\n");
Dating back to the era of typewriters, the line feed did just that; it literally fed a new line of paper into the typewriter. The carriage return also followed its namesake; it actually returned the carriage to the left most position, normally a duty done by physically sliding the carriage. Once the first printers appeared, the terminology carried over into computer science and C and sticks with us today.
By looking at the terminal window’s output, the system is doing exactly what it was told to do; it added a new line (went down a line) but stayed at the same horizontal position where it was and continued to print (because the virtual carriage never returned to the left). Therefore, a “\r” character should first return the printing position to the left most column before advancing to the next line with “\n”. Does this make sense?
Yes it quite definitely does. Thank you for the quick answer.