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Format:Assign (<the Name of a file variable>, <the Filename>);
The filename is set or a string constant, or through a type variable
Sting. The filename should correspond to rules working at present systems. If name string empty link of a file variable is carried out with a standard input\output device (as a rule - with the console).
After that the file should be open by one of procedures:
Reset (<the Name of a file variable>);
The existing file for reading, the pointer of the current component opens
File it is customised on the file beginning. If the physical file, ???? a file variable does not exist, there is a situation
Input-output errors.
Rewrite (<the Name of a file variable>);
The new empty file for record opens, to it the name set by procedure Assign is assigned. If the file with such name already exists, it is deleted.
After operation with a file it, as a rule, should be closed procedure Close.
Close (<the Name of a file variable>);
This requirement without fail should be observed for a file in which record was made.
Now we will consider the direct organisation of reading and record.
For input of the information from a file opened for reading, Read operator already familiar to you is used. However, in its format and usage you will notice some changes:
Read (<the Name of a file variable>, <the input List>);
There is a data read-out from a file in the variables which names are specified ??????? input. Variables should be the same type, as the file component.
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