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Read and Write text files
Loadtocnode (2, 'summary ');
Read a text file
This section describes how to useStreamreaderClass to read text files. Write a text file (Example 1)And write a text file (Example 2)
Each section describes how to
In the programming process, file operations are a common problem. In C ++ builder, you can use multiple methods to operate files, I will introduce this in detail in the following parts:
1. C-based file operations;
2. File Operations Based on C ++;
Directory
Objective
Read TXT file
Write TXT file
PrefaceThe computer initially only supported ASCII encoding, but later in order to support characters in other languages (such as kanji) and some special characters (such as €),
C + + read and write file operation code
Constant Value DescriptionFmopenread 0 opens with read-only propertyFmopenwrite 1 opens with write-only propertyFmopenreadwrite 2 opens with read/write propertiesFmsharecompat 0 Compatible FCB mode (the
After the file is opened in the specified working mode, you can read and write the file. The following operations are performed by file type. For different types of text files and binary files, you can read and write files by character or by string.
C language file read and write operation summaryC Language File operationsI. Reading and writing of standard documents1. Opening of the fileThe open operation of the fopen () file indicates that the user-specified file will be allocated in memory
C Language File operationsI. Reading and writing of standard documents1. Opening of the fileThe open operation of the fopen () file indicates that the user-specified file will be allocated in memory with a single file structure and a pointer to the
C language File read and write operation summary
C Language File operation
I. Reading and writing of standard documents
1. Open the file
The open operation of the fopen () file means that the file specified by the user is allocated a filename in
C-based file operations
In ANSI C, the operation of the file is divided into two ways, that is, streaming file operations and I/O file operations, respectively, described below.
One, streaming file operation
The file operations in this way have an
I. file read/write
As mentioned above, stream reads and writes mainly include , get, put, read, write, and other operations. ofstream inherits from ostream, and ifstream inherits from istream, therefore, the operation functions are consistent.
C ++
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