Determine whether a path exists in Linux (whether a folder exists)

# Include <iostream>
# Include <sys/types. h>
# Include <dirent. h>
# Include <sys/STAT. h>
# Include <unistd. h>
Using namespace STD;

Int main (void)
{
Char buff [] = "/home/WHC/Test2 /";
// 1 opendir () and closedir
Dir * dir = NULL;
Dir = opendir (buff );
If (null = DIR)
Cout <"1: The file does not exist" <Endl;
Else
{
Cout <"1: file exists" <Endl;
Closedir (DIR );
}
 
// 2 Access
If (access (buff, f_ OK) = 0)
Cout <"2: file exists" <Endl;
Else
Cout <"2: The file does not exist" <Endl;
 
// 3 stat
Struct stat st;
If (STAT (buff, & St) = 0)
Cout <"3: file exists" <Endl;
Else
Cout <"3: The file does not exist" <Endl;

Return 0;
}

 

The second method is relatively simple and convenient.