Simple iostream format question

Hello,

How can output to iostreams (example std::cout) be wrapped around and appear on the same line?

In particular, I would like to print some ticker sequence like

Number: 0.0
Number: 0.1
Number: 0.2

all on one line such that the "Number: " part remains steady and the decimal ticker part counts up. I guess the ideal solution would only print the "Number: " part once and cleverly back up over the decimal ticker part. I tried some stuff with '\r', but didn't like the lack of elegance of the implementation. In addition, with '\r' if the results of previous outputs were longer than the present outputs, then the characters will not be erased and they remain as ghost images.

The sample code prints a separate line for each ticker. Can anyone modify the sample code accordingly for the desired ticker effect. I would really appreciate any help.

Thanks a lot.
Chris.

:)

Code:

---


#include <iostream>
using namespace std;

int main(int argc, char* argv[])
{
  std::cout << endl;

  for(volatile int n = 0; n <= 100; n++)
  {
    std::cout << "Number: "
              << double(n) / 10
              << endl;
  }
 
  return n;
}

---

dude_1967,

Kinda swamped today so I can't modify your code. But have
you tried using the backspace charactor (\b)? I used it a
long time ago to display a console like program progress
baton using printf.

regards, willchop

well i think this'll help ya
note: this was originally posted to me by zdf

Code:

---

#include <iostream>
#include <iomanip>

using namespace std;

int main(int argc, char* argv[])
{
  double d = 123.45;
  float f = 67.89f;
  cout << d << endl // 123.45
      << f << endl; // 67.89
  cout << fixed << setprecision(1)
      << d << endl // 123.4
      << f << endl; // 67.8
  return 0;
}

---

Thanks.

Used a combination of '\b' and ::std::setprecision() to accomplish the format.

Chris.

:cool: