What is the difference between #include and #include" "

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Rajesh N V

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first one is used for predefined header files.. and second is used for user defined header files
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the location where the header files reside. First #include - indicates that the headers are in the std C libraries installation folder. ------------------ #include" " generally indicates the header files that the developed created, generally reside in the local folder.
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C/C++ & UNIX Shell Scripting Programmer & Tutor

First variant with angled brackets :- This variant is used for system header files. It searches for a file named file in a list of directories specified by you, then in a standard list of system directories. You specify directories to search for header files with the command option `-I' #include "file.h": This...
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First variant with angled brackets :- This variant is used for system header files. It searches for a file named file in a list of directories specified by you, then in a standard list of system directories. You specify directories to search for header files with the command option `-I' #include "file.h": This variant is used for header files of your own program. It searches for a file named file first in the current directory, then in the same directories used for system header files. The current directory is the directory of the current input file. It is tried first because it is presumed to be the location of the files that the current input file refers to. (If the `-I-' option is used, the special treatment of the current directory is inhibited.) read less
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Software Developer and Trainer with 10 years of experience

If your header file and code file is in the same director use include "myheader.h". This is mostly used of you define your own custom header file. On the other hand, include followed by with anglular brackets greaterthan-> and less than - read more
If your header file and code file is in the same director use include "myheader.h". This is mostly used of you define your own custom header file. On the other hand, include followed by with anglular brackets greaterthan-> and less than -read less
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embedded system trainer

#include" " is used for header files in current directory, The compiler while resolving symbols searches the current directory for the header file. the other case of is used for standard directory searches of header files i.e as usually directed by makefiles.
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Computer Engineering / Diploma Tutor

Just a different syntax to including file in a program
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