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ICU-3499 Add some documentation

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X-SVN-Rev: 15495
This commit is contained in:
George Rhoten 2004-05-24 06:02:46 +00:00
parent efa0aef669
commit 7e456fd7c3
1 changed files with 56 additions and 1 deletions
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57
icu4c/source/io/unicode/ustdio.h
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@ -76,7 +76,9 @@
Maybe a flush or a rewind are good enough. Maybe a flush or a rewind are good enough.
* Make sure that a UFile opened with "rw" can be used after using * Make sure that a UFile opened with "rw" can be used after using
u_fflush with a u_frewind. u_fflush with a u_frewind.
* Complete the file documentation * scanf(%i) should detect what type of number to use.
* Complete the file documentation with proper doxygen formatting.
See http://oss.software.ibm.com/pipermail/icu/2003-July/005647.html
*/ */
/** /**
@ -84,6 +86,59 @@
* \brief C API: Unicode stdio-like API * \brief C API: Unicode stdio-like API
* *
* <h2>Unicode stdio-like C API</h2> * <h2>Unicode stdio-like C API</h2>
printf
fmt type Comment
%E double Scientific with an uppercase exponent
%e double Scientific with a lowercase exponent
%G double Use %E or %f for best format
%g double Use %e or %f for best format
%f double Simple floating point without the exponent
%X int32_t ustdio special uppercase hex radix formatting
%x int32_t ustdio special lowercase hex radix formatting
%d int32_t Decimal format
%i int32_t Same as %d
%n int32_t count (write the number of chars written)
%o int32_t octal ustdio special octal radix formatting
%u uint32_t Decimal format
%p void * Prints the pointer value
%s char * Use default converter or specified converter from fopen
%hs char * (Unimplemented) Use invariant converter
%ls N/A (Unimplemented) Reserved for future implementation
%c char Use default converter or specified converter from fopen
%hc char (Unimplemented) Use invariant converter
%lc N/A (Unimplemented) Reserved for future implementation
%S UChar * Null terminated UTF-16 string
%hS char * (Unimplemented) Null terminated UTF-8 string
%lS UChar32 * (Unimplemented) Null terminated UTF-32 string
%C UChar 16-bit Unicode code unit
%hC char (Unimplemented) 8-bit Unicode code unit
%lC UChar32 (Unimplemented) 32-bit Unicode code unit
%% N/A Show a percent sign
Format modifiers
%h int16_t short format for %d, %i, %o, %x
%l int32_t long format for %d, %i, %o, %x (no effect)
%ll int64_t long long format for %d, %i, %o, %x
%h uint16_t short format for %u
%l uint32_t long format for %u (no effect)
%ll uint64_t (Unimplemented) long long format for %u
%- N/A Left justify
%+ N/A Always show the plus or minus sign. Needs data for plus sign.
% N/A Instead of a "+" output a blank character for positive numbers.
%# N/A Precede octal value with 0, hex with 0x and show the
decimal point for floats.
%num N/A Width of input/output. num is an actual number from 0 to
some large number.
%.num N/A Significant digits precision. num is an actual number from
0 to some large number. Currently can only specify precision
before or after decimal, and not total precision.
printf modifier
%* int32_t Next argument after this one specifies the width
scanf modifier
%* N/A This field is scanned, but not stored
*/ */