[0, 0x7F] inclusive case 0 ... 0x7F: putchar(c); break; // matches any value between [0x80, 0x7FF] inclusive case 0x80 ... 0x7FF: putchar(0xC0 + c >> 6); putchar(0x80 + c & 0x3f); break; // matches any value between [0x800, 0xFFFF] inclusive case 0x800 ... 0xFFFF: putchar(0xE0 + c >> 12); putchar(0x80 + (c >> 6) & 0x3f); putchar(0x80 + (c >> 12)); break; default: unreachable(); }}

Python