1. ## setbase

i cannot understand what setbase is
can you explain to me? is something about hex dec and oct but i dont understand
i know that hex is from 0 to f
dec 0 to 9
and
oct 0 to 7

2. Simply put, std::setbase sets an output base. Which means that when you output a number, it converts that to the base you specified and outputs that instead of what you inputted.
For example, use std::setbase(16) and output 255, and you will get FF. Output 0xFF and you will get... that's right, FF.

3. but the exercise im reading tells 9 in base 10, is 11 in base 8
if its that you are telling what this sentence means

4. The number "9" in base 10 would be "10" in base 8.

5. The decimal base we know and love is built on powers of 10: one, ten, hundred, thousand. The binary base is built on powers of 2: one, two, four, eight. So 1101(2) is eight+four+one=thirteen. Similarly octal is built on powers of eight and hex on powers of 16.

6. ohhh yeah
god i have understand now
for some reason i got confused