C - General Structure of File program, Some function used for File Handling
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General structure of file program
#include <stdio.h>
main( )
{
FILE * fp1;
/*
* Open any file .txt format file and mode( read, write, append)
*/
fp1=fopen("filename","mode" );
---------------------------
----------------------------
-------------------------------
fclose(fp1);
};
End of file: The file reading function need to know the end of file so that they can stop reading. When the end of file is reached , the operating signal send s an end of file signal to the program. When the program receive this signal , the file reading function return EOF which is constant defined in the file <stdio.h> an its value -1 . EOF is an integer value so make sure the return value of the function is assigned to a integer variables.
| Some Function used for file Handling | |
| Character I/O | fgetc( ), fputc( ), getc( ), putc( ) |
| String I/O | fgets( ), fputs( ) |
| Integer I/O | getw( ), putw( ) |
| Formatted I/O | fscanf( ), fprintf( ) |
| Record I/O | fread( ), fwrite( ) |
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