toascii man page


This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

toascii — translate an integer to a 7-bit ASCII character


#include <ctype.h>

int toascii(int c);


The toascii() function shall convert its argument into a 7-bit ASCII character.

Return Value

The toascii() function shall return the value (c &0x7f).


No errors are returned.

The following sections are informative.

Application Usage

The toascii() function cannot be used portably in a localized application.

Future Directions

The toascii() function may be removed in a future version.

See Also


The Base Definitions volume of POSIX.1‐2008, <ctype.h>