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File Extension H

H file stands for C/C++ Header Format File. THis file defines tHe constants, variables and commonly used functions tHat are required by a C/C++ program. THis can also define useful macros for common tasks wHicH will be used several times in a program.
An H file generally begins witH a Header guard. THis is required to prevent a Header file from being included in a program more tHan once. THis is followed by tHe actual declarations of functions, macros, constants and variables. Generally, tHe constants, macros and variables are defined before tHe declarations of functions. A Header file generally sHould not contain function definitions in its structure.

File type C/C++ Header Format
Developer Lack of information
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Programs that open the H file