printf, how to insert decimal point for integer

Question

I have an UINT16 unsigned integer of say

4455, 312, 560 or 70.

How to use printf to insert a decimal point before the last two

Answer 1

with a int x1000 precision 1234123 -> 1234.123

printf("%4d.%.3d\n", x / 1000, x % 1000);

if you need to round to 2 decimal

printf("%4d.%.2d\n", ((x+5)/10) / 100, ((x+5)/10) % 100);

only tested with positive

input        print
000004       0.00
000005       0.01

000014       0.01
000015       0.02

000100       0.10
000101       0.10

000105       0.11
000994       0.99
000995       1.00
...