Merge pull request #4247 from stwish-msft/patch-11

Update scanf %c to mention field width

Author: PRMerger12

docs/c-runtime-library/scanf-type-field-characters.md

@@ -14,8 +14,8 @@ The `type` character is the only required format field; it appears after any opt
 
 |Character|Type of input expected|Type of argument|Size argument in secure version?|
 |---------------|----------------------------|----------------------|--------------------------------------|
-|`c`|Character. When used with `scanf` functions, specifies single-byte character; when used with `wscanf` functions, specifies wide character. White-space characters that are ordinarily skipped are read when `c` is specified. To read next non-white-space single-byte character, use `%1s`; to read next non-white-space wide character, use `%1ws`.|Pointer to **`char`** when used with `scanf` functions, pointer to **`wchar_t`** when used with `wscanf` functions.|Required. Size does not include space for a null terminator.|
-|`C`|Opposite size character. When used with `scanf` functions, specifies wide character; when used with `wscanf` functions, specifies single-byte character. White-space characters that are ordinarily skipped are read when `C` is specified. To read next non-white-space single-byte character, use `%1s`; to read next non-white-space wide character, use `%1ws`.|Pointer to **`wchar_t`** when used with `scanf` functions, pointer to **`char`** when used with `wscanf` functions.|Required. Size argument does not include space for a null terminator.|
+|`c`|Character. When used with `scanf` functions, specifies single-byte character; when used with `wscanf` functions, specifies wide character. White-space characters that are ordinarily skipped are read when `c` is specified. Unlike with other type fields, the field width specifier indicates the exact number of characters, not the maximum. To read next non-white-space single-byte character, use `%1s`; to read next non-white-space wide character, use `%1ws`.|Pointer to **`char`** when used with `scanf` functions, pointer to **`wchar_t`** when used with `wscanf` functions.|Required. Size does not include space for a null terminator.|
+|`C`|Opposite size character. When used with `scanf` functions, specifies wide character; when used with `wscanf` functions, specifies single-byte character. White-space characters that are ordinarily skipped are read when `C` is specified. Unlike with other type fields, the field width specifier indicates the exact number of characters, not the maximum. To read next non-white-space single-byte character, use `%1s`; to read next non-white-space wide character, use `%1ws`.|Pointer to **`wchar_t`** when used with `scanf` functions, pointer to **`char`** when used with `wscanf` functions.|Required. Size argument does not include space for a null terminator.|
 |`d`|Decimal integer.|Pointer to **`int`**.|No.|
 |`i`|An integer. Hexadecimal if the input string begins with "0x" or "0X", octal if the string begins with "0", otherwise decimal.|Pointer to **`int`**.|No.|
 |`o`|Octal integer.|Pointer to **`int`**.|No.|