Defined in header
int putchar( int ch );
Writes a character
stdout. Internally, the character is converted to unsigned char just before being written.
Equivalent to putc(ch, stdout).
|ch||-||character to be written|
 Return value
On success, returns the written character.
abcdefghijklmnopqrstuvwxy 0x1070 p 0x70
 See also
| writes a character to a file stream
C documentation for putchar