C Programming Code Examples
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fgetc() Function in C Programming Language
fgetc() Function in C
Get character from stream. Returns the character currently pointed by the internal file position indicator of the specified stream. The internal file position indicator is then advanced to the next character.
If the stream is at the end-of-file when called, the function returns EOF and sets the end-of-file indicator for the stream (feof).
If a read error occurs, the function returns EOF and sets the error indicator for the stream (ferror).
fgetc and getc are equivalent, except that getc may be implemented as a macro in some libraries.
Syntax for fgetc() Function in C
#include <stdio.h>
int fgetc ( FILE * stream );
stream
Pointer to a FILE object that identifies an input stream.
fgetc() is used to obtain input from a file single character at a time. This function returns the ASCII code of the character read by the function. It returns the character present at position indicated by file pointer. After reading the character, the file pointer is advanced to next character. If pointer is at end of file or if an error occurs EOF file is returned by this function.
On success, the character read is returned (promoted to an int value).
The return type is int to accommodate for the special value EOF, which indicates failure:
If the position indicator was at the end-of-file, the function returns EOF and sets the eof indicator (feof) of stream.
If some other reading error happens, the function also returns EOF, but sets its error indicator (ferror) instead.
/* get character from stream by fgetc() function example */
/* Open, Read and close a file: Reading char by char */
# include <stdio.h>
int main( )
{
FILE *fp ;
char c ;
printf( "Opening the file test.c in read mode" ) ;
fp = fopen ( "test.c", "r" ) ; // opening an existing file
if ( fp == NULL )
{
printf ( "Could not open file test.c" ) ;
return 1;
}
printf( "Reading the file test.c" ) ;
while ( 1 )
{
c = fgetc ( fp ) ; // reading the file
if ( c == EOF )
break ;
printf ( "%c", c ) ;
}
printf("Closing the file test.c") ;
fclose ( fp ) ; // Closing the file
return 0;
}
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