windows-nt/Source/XPSP1/NT/base/crts/crtw32/iostream/ostrint.cpp
2020-09-26 16:20:57 +08:00

57 lines
1.2 KiB
C++

/***
* ostrint.cpp - definitions for ostream class operator<<(int) member functions
*
* Copyright (c) 1991-2001, Microsoft Corporation. All rights reserved.
*
*Purpose:
* Contains the member function definitions for ostream operator<<(int).
*
*Revision History:
* 09-23-91 KRS Created. Split out from ostream.cxx for granularity.
* 06-14-95 CFW Comment cleanup.
*
*******************************************************************************/
#include <cruntime.h>
#include <internal.h>
#include <stdio.h>
#include <iostream.h>
#pragma hdrstop
ostream& ostream::operator<<(int n)
{
_WINSTATIC char obuffer[12];
_WINSTATIC char fmt[4] = "%d";
_WINSTATIC char leader[4] = "\0\0";
if (opfx()) {
if (n)
{
if (x_flags & (hex|oct))
{
if (x_flags & hex)
{
if (x_flags & uppercase)
fmt[1] = 'X';
else
fmt[1] = 'x';
leader[1] = fmt[1]; // 0x or 0X (or \0X)
}
else
fmt[1] = 'o';
if (x_flags & showbase)
leader[0] = '0';
}
else if ((n>0) && (x_flags & showpos))
{
leader[0] = '+';
}
}
sprintf(obuffer,fmt,n);
writepad(leader,obuffer);
osfx();
}
return *this;
}