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Clib.ungetc()Method

This method pushes a character back into a file.

Syntax

Clib.ungetc(char, filePointer)

Returns

The value of char if successful, EOF if unsuccessful.

Usage

When char is put back, it is converted to a byte and is again in the file for subsequent retrieval. Only one character is pushed back. You might want to use this function to read up to, but not including, a newline character. You would then use Clib.ungetc to push the newline character back into the file buffer.

See Also

Clib.fgetc() Method and Clib.getc() Method
Clib.fputc() Method and Clib.putc() Method
Clib.putenv() Method