Findfirst, strncasecmp Function

Usage of findfirst Function
Function Name: findfirst
Function prototype: int findfirst (char * fname, struct ffblk * PTR, int attrib)
Function: find the name of the first file that matches the fname.
Function return:
Parameter description: PTR-Save the information of the searched File
File: <dir. h>

# Include <stdio. h>
# Include <dir. h>
Int main ()
{
Struct ffblk;
Int done;
Printf ("Directory Listing *.*");
Done = findfirst ("*. *", & ffblk, 0 );
While (! Done)
{
Printf ("% s", ffblk. ff_name );
Done = findnext (& ffblk );
}
Return 0;
}

Int findfirst (char * pathname, struct ffblk * ffblk, int attrib) to find the specified file.
Returns 0.
Pathname is the specified directory name and file name, for example, "C: // WPS // TXT"
Ffblk is a specified structure for saving file information. It is defined as follows:
When there are too many threads, there are too many threads, too many threads.
Explain struct ffblk success
Detail {detail
Optional char ff_reserved [21];/* dos reserved words */reserved
Optional char ff_attrib;/* file attributes */optional
Optional int ff_ftime;/* file time */optional
Optional int ff_fdate;/* file date */optional
Optional long ff_fsize;/* file length */optional
Optional char ff_name [13];/* file name */optional
} Else
When there are too many threads, there are too many threads, too many threads.
Attrib is a file attribute, represented by the following characters
When there are too many threads, there are too many threads, too many threads.
┃ Fa_rdonly read-only file named internal fa_label volume number Internal
Invalid fa_hidden: Hide the file named "invalid fa_direc ".
Invalid fa_system System File internal fa_arch file external
When there are too many threads, there are too many threads, too many threads.
Example:
Struct ffblk ff;
Findfirst ("*. wps", & ff, fa_rdonly );
 
This is only for windows, but opendir is used to open a folder in Linux. the header file is dirent. h.

 

 

 

Definition and usage
Definition and usage

The strncasecmp () function compares two strings.
The strncasecmp () function compares the first n characters of a string (Case Insensitive ).

This function returns:
This function returns the following values:

• 0-if the two strings are equal
  0-if the string is equal
• <0-If string1 is less than string2
  <0-If string1 is smaller than string2
• > 0-If string1 is greater than string2
  > 0-If string1 is greater than string2

Syntax
Syntax

strncasecmp(string1,string2,length)

Parameter Parameters	Description
String1	Required. specifies the first string to compare Required parameter. Specifies the first string object involved in the comparison
String2	Required. specifies the second string to compare Required parameter. Specify the second string object involved in the comparison
Length	Required. specify the number of characters from each string to be used in the comparison Required parameter. Specify the number of characters for Parameter comparison in each string

Tips and notes
Notes

Note:The strncasecmp () is binary safe and case-insensitive.
Note: The strncasecmp () function is binary accurate and case-insensitive.

Example
Case

<?phpecho strncasecmp("Hello world!","hello earth!",6);?>

The output of the code above will be:
The above code will output the following results:

0