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From: "Wirawan Purwanto" <wirawan AT camelot DOT physics DOT wm DOT edu>
To: <cygwin AT cygwin DOT com>
Subject: Strange behavior of MSVC's printf under cygwin shell?
Date: Mon, 25 Mar 2002 16:38:27 -0500
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X-OriginalArrivalTime: 25 Mar 2002 21:37:40.0726 (UTC) FILETIME=[4A49B160:01C1D445]

Hi,

Why does the screen output displayed using MSVC's printf subroutine not get
shown immediately under Cygwin shell (bash, specifically)? Rather, it would
wait for a long time before showing the text lines (many lines at once). How
to change this behavior?

I used the following (simple) code as an example:

#include<stdio.h>
int main() {
    for (int i=0; i < 50; ++i) {
        printf("%d %d\n", i, i*i);
        for (int j=0; j < 10000000; ++j); /* just for delay */
    }
    return 0;
}

Try to compile it using: gcc -mno-cygwin sample.c , then run it: ./a.exe. If
you remove "-mno-cygwin", this strange behavior disappears. Under MS-DOS
shell, this behavior does not exist.

Thanks,
Wirawan

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