Name: Anonymous 2020-11-14 22:40
int
main (void)
{
int c;
while ((c = getchar ()) != EOF)
fputs ((c & 0x80) || c < 0x20
? (char []){c, 0}
: c == 0x20 ? (char []){0xE3, 0x80, 0x80, 0}
: c < 0x60 ? (char []){0xEF, 0xBC, 0x60 + c, 0}
: (char []){0xEF, 0xBD, 0x20 + c, 0}, stdout);
return 0;
}