93 lines
2.6 KiB
C
93 lines
2.6 KiB
C
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/***
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*scanf.c - read formatted data from stdin
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*
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* Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* defines scanf() - reads formatted data from stdin
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*
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*Revision History:
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* 09-02-83 RN initial version
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* 04-13-87 JCR added const to declaration
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* 06-24-87 JCR (1) Made declaration conform to ANSI prototype and use
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* the va_ macros; (2) removed SS_NE_DS conditionals.
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* 11-04-87 JCR Multi-thread support
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* 12-11-87 JCR Added "_LOAD_DS" to declaration
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* 05-27-88 PHG Merged DLL and normal versions
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* 06-15-88 JCR Near reference to _iob[] entries; improve REG variables
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* 08-17-89 GJF Clean up, now specific to OS/2 2.0 (i.e., 386 flat
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* model). Also fixed copyright and indents.
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* 02-15-90 GJF Fixed copyright
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* 03-19-90 GJF Made calling type _CALLTYPE2, added #include
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* <cruntime.h> and removed #include <register.h>.
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* 07-23-90 SBM Replaced <assertm.h> by <assert.h>
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* 10-03-90 GJF New-style function declarator.
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* 04-06-93 SKS Replace _CRTAPI* with __cdecl
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* 09-06-94 CFW Replace MTHREAD with _MT.
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* 02-06-94 CFW assert -> _ASSERTE.
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* 03-07-95 GJF Use _[un]lock_str2 instead of _[un]lock_str. Also,
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* removed useless local and macro.
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* 03-02-98 GJF Exception-safe locking.
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*
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*******************************************************************************/
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#include <cruntime.h>
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#include <stdio.h>
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#include <dbgint.h>
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#include <stdarg.h>
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#include <file2.h>
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#include <internal.h>
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#include <mtdll.h>
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/***
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*int scanf(format, ...) - read formatted data from stdin
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*
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*Purpose:
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* Reads formatted data from stdin into arguments. _input does the real
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* work here.
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*
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*Entry:
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* char *format - format string
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* followed by list of pointers to storage for the data read. The number
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* and type are controlled by the format string.
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*
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*Exit:
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* returns number of fields read and assigned
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*
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*Exceptions:
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*
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*******************************************************************************/
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int __cdecl scanf (
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const char *format,
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...
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)
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/*
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* stdin 'SCAN', 'F'ormatted
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*/
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{
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int retval;
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va_list arglist;
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va_start(arglist, format);
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_ASSERTE(format != NULL);
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#ifdef _MT
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_lock_str2(0, stdin);
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__try {
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#endif
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retval = (_input(stdin,format,arglist));
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#ifdef _MT
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}
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__finally {
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_unlock_str2(0, stdin);
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}
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#endif
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return(retval);
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}
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