c++ - Carriage Return Multiple Lines -

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i'm working on console based fps/clock display debugging allegro game i'm working on, , i've been trying figure out how console output change without having stick arbitrary system("cls") @ top of game loop.

right have...

while(game.running()) {     std::cout         << "\r" << "fps: " << getframerate()         << "\n"         << "\r" << "time: " << gettime();      // other game loop things... }

what i'm going this, line rewritten each time.

fps: ___ time: ___

(where ___ whatever current value is)

but when run get...

fps: ___ fps: ___ fps: ___ time: ___

↑ goes on , on... fills screen fps:__ , single time:__ @ bottom without overwriting.

'\r' has confounded me, , haven't found useful on google. appreciated.

how using putchar(int) ? putchar(0x08) backspace or so.

i'm not sure, problem cr(0x0d carriage return) , lf(0x0a line feed) doesn't work expected. maybe because std::cout class flush standard out ( in case terminal ) after several getframerate() call.


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