Lines beginning with a hash sign (#) are directives for the preprocessor. They are not regular code lines
with expressions but indications for the compiler's preprocessor. In this case the directive #include
<iostream> tells the preprocessor to include the iostream standard file. This specific file (iostream)
includes the declarations of the basic standard input-output library in C++, and it is included because its
functionality is going to be used later in the program.
with expressions but indications for the compiler's preprocessor. In this case the directive #include
<iostream> tells the preprocessor to include the iostream standard file. This specific file (iostream)
includes the declarations of the basic standard input-output library in C++, and it is included because its
functionality is going to be used later in the program.
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Header Files
- iPhone HelloWorld 之HelloWorldAppDelegate.h
- string.h Definitions for memory and string functions
- stdlib.h Definitions for common types, variables, and functions
- stdio.h Definitions for stream input/output
- stddef.h Definitions for common types, NULL, and errno
- stdarg.h Definitions for accessing parameters in functions that accept a variable number of arguments
- signal.h Definitions for ANSI defined signaling capability
- share.h File sharing mode for use with sopen
- setjmp.h Defines typedef and functions for setjmp/longjmp.
- process.h Symbols and structures for process management
- mem.h Memory manipulation functions
- math.h Definitions for the math floating point package.
- alloc.h memory management functions and variables
- ctype.h Defines the ctype macros.
Turbo C
- string.h Definitions for memory and string functions
- stdlib.h Definitions for common types, variables, and functions
- stdio.h Definitions for stream input/output
- stddef.h Definitions for common types, NULL, and errno
- stdarg.h Definitions for accessing parameters in functions that accept a variable number of arguments
- stat.h Definitions used for file status functions
- signal.h Definitions for ANSI defined signaling capability
- share.h File sharing mode for use with sopen
- setjmp.h Defines typedef and functions for setjmp/longjmp.
- process.h Symbols and structures for process management
- mem.h Memory manipulation functions
- MCOMMAND Programming in C
- MCINPUT Programming in C
- MCDISPLY Programming in C
- MCALC Turbo C Programming
- matherr - user-modifiable math error handler
- math.h Definitions for the math floating point package.
- alloc.h memory management functions and variables
- Precedence of Operators in C++
- Structure of a program in C++ Learn
- getopt.c -- Turbo C