Files are needed to store a program's source code. The compiler uses these files to create object files which can then be linked by the linker to produce an executable code file. However, not all systems support the concept of a file, thus files are not actually considered part of the C standard and therefore files are not needed. They are simply a convenience when programming upon systems that do support the concept of a file.
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That's entirely up to the programmer. A program could create 0 files or 50 million files (or any number in between).
Include files are also known as header files.
TIFF files are image files. They need to be opened in some type of image viewing program or image editing program like Photoshop.
Variable Default value:Windows XP Default value:Windows 7/2008 %ALLUSERSPROFILE% C:\Documents and Settings\All Users C:\ProgramData %APPDATA% C:\Documents and Settings\{username}\Application Data C:\Users\{username}\AppData\Roaming %CommonProgramFiles% C:\Program Files\Common Files C:\Program Files\Common Files %COMMONPROGRAMFILES(x86)% C:\Program Files (x86)\Common Files C:\Program Files (x86)\Common Files %COMPUTERNAME% {computername} {computername} %COMSPEC% C:\Windows\System32\cmd.exe C:\Windows\System32\cmd.exe %HOMEDRIVE% C: C: %HOMEPATH% \Documents and Settings\{username}\Users\{username} %LOCALAPPDATA%N/A(but can be manually added LOCALAPPDATA=%USERPROFILE%\Local Settings\Application Data)C:\Users\{username}\AppData\Local %LOGONSERVER% \\{domain_logon_server} \\{domain_logon_server} %PATH% C:\Windows\System32\;C:\Windows\;C:\Windows\System32\Wbem;{plus program paths} C:\Windows\System32\;C:\Windows\;C:\Windows\System32\Wbem;{plus program paths} %PATHEXT% .COM; .EXE; .BAT; .CMD; .VBS; .VBE; .JS ; .WSF; .WSH; .COM; .EXE; .BAT; .CMD; .VBS; .VBE; .JS ; .WSF; .WSH; .MSC %ProgramData% N/A C:\ProgramData %ProgramFiles% C:\Program Files C:\Program Files %ProgramFiles(x86)% 1 C:\Program Files (x86) C:\Program Files (x86) %PROMPT% Code for current command prompt format,usually $P$G C:> Code for current command prompt format,usually $P$GC:> %PSModulePath% N/A %SystemRoot%\system32\WindowsPowerShell\v1.0\Modules\ %Public% N/A C:\Users\Public %SYSTEMDRIVE% C: C: %SYSTEMROOT% C:\Windows C:\Windows %TEMP% and %TMP% C:\Documents and Settings\{username}\Local Settings\Temp C:\Users\{Username}\AppData\Local\Temp %USERDOMAIN% {userdomain} {userdomain} %USERNAME% {username}{username} %USERPROFILE% %SystemDrive%\Documents and Settings\{username}%SystemDrive%\Users\{username} %WINDIR% C:\Windows C:\Windows
Surround the name of the program in quotation marks, such as: "C:\Program Files (x86)\Programmer's Notepad\pn.exe".