terminal - ANSI escape code ESC[0E doesn't work as expected -

i trying out example code this answer.

#include <iostream> #include <thread> #include <chrono>  void drawprogressbar(int, double);  int main() {      drawprogressbar(30, .25);     std::this_thread::sleep_for(std::chrono::seconds(1));     drawprogressbar(30, .50);     std::this_thread::sleep_for(std::chrono::seconds(1));     drawprogressbar(30, .75);     std::this_thread::sleep_for(std::chrono::seconds(1));     drawprogressbar(30, 1);      return 0; }  void drawprogressbar(int len, double percent) {     std::cout << "\x1b[2k"; // erase entire current line.     std::cout << "\x1b[0e"; // move beginning of current line.     std::string progress;     (int = 0; < len; ++i) {         if (i < static_cast<int>(len * percent)) {             progress += "=";         } else {             progress += " ";         }     }     std::cout << "[" << progress << "] " << (static_cast<int>(100 * percent)) << "%" << std::flush; } 

the expected behavior progress bar so:

[=======                       ] 25% 

which update 3 times on same line, ending as:

[==============================] 100% 

after 3 seconds.

while each progress bar gets erased expected, next progress bar drawn 1 line down, not on same line expecting to.

the documentation linked in answer (wikipedia) says csi n e (esc[ne) n integer:

moves cursor beginning of line n (default 1) lines down.

so expect csi 0 e (esc[0e) move cursor beginning of current line (the line 0 lines down).

why doesn't it? also, how can achieve intended behavior?

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i'm using terminal.app on os x run program.

hmm, try:

std::cout << "\r"; 

instead of:

std::cout << "\x1b[2k"; // erase entire current line. std::cout << "\x1b[0e"; // move beginning of current line. 

this carriage return, should reposition cursor @ beginning of line.

(by way, kudos commenting code. love when people on here :) )