method

putc

v1_9_1_378 - Show latest stable - Class: IO

putc(p1)

public

If obj is Numeric, write the character whose code is obj, otherwise write the first character of the string representation of obj to ios.

$stdout.putc "A"
$stdout.putc 65

produces:

AA

static VALUE
rb_io_putc(VALUE io, VALUE ch)
{
    char c = NUM2CHR(ch);

    rb_io_write(io, rb_str_new(&c, 1));
    return ch;
}