48 lines
1.7 KiB
C
48 lines
1.7 KiB
C
/*
|
|
* Copyright (c) Huawei Technologies Co., Ltd. 2014-2018. All rights reserved.
|
|
* Description: fscanf_s function
|
|
* Author: lishunda
|
|
* Create: 2014-02-25
|
|
*/
|
|
|
|
#include "securec.h"
|
|
|
|
/*
|
|
* <FUNCTION DESCRIPTION>
|
|
* The fscanf_s function is equivalent to fscanf except that the c, s,
|
|
* and [ conversion specifiers apply to a pair of arguments (unless assignment suppression is indicated by a*)
|
|
* The fscanf function reads data from the current position of stream into
|
|
* the locations given by argument (if any). Each argument must be a pointer
|
|
* to a variable of a type that corresponds to a type specifier in format.
|
|
* format controls the interpretation of the input fields and has the same
|
|
* form and function as the format argument for scanf.
|
|
*
|
|
* <INPUT PARAMETERS>
|
|
* stream Pointer to FILE structure.
|
|
* format Format control string, see Format Specifications.
|
|
* ... Optional arguments.
|
|
*
|
|
* <OUTPUT PARAMETERS>
|
|
* ... The convered value stored in user assigned address
|
|
*
|
|
* <RETURN VALUE>
|
|
* Each of these functions returns the number of fields successfully converted
|
|
* and assigned; the return value does not include fields that were read but
|
|
* not assigned. A return value of 0 indicates that no fields were assigned.
|
|
* return -1 if an error occurs.
|
|
*/
|
|
int fscanf_s(FILE *stream, const char *format, ...)
|
|
{
|
|
int ret; /* If initialization causes e838 */
|
|
va_list argList;
|
|
|
|
va_start(argList, format);
|
|
ret = vfscanf_s(stream, format, argList);
|
|
va_end(argList);
|
|
(void)argList; /* To clear e438 last value assigned not used , the compiler will optimize this code */
|
|
|
|
return ret;
|
|
}
|
|
|
|
|