public/subjects/countdown.md

## countdown

### Instructions

Write a program that displays all digits in descending order, followed by a
newline.

### Expected main and function for the program

### Expected output

```console
student@ubuntu:~/piscine/test$ go build
student@ubuntu:~/piscine/test$ ./test
9876543210
student@ubuntu:~/piscine/test$
```
Change titles format `sed -i 's/^\(#\+\) /\1# /' *.md` 6 years ago			`## countdown`
quest11 quest10 and quest8 6 years ago
Change titles format `sed -i 's/^\(#\+\) /\1# /' *.md` 6 years ago			`### Instructions`
quest11 quest10 and quest8 6 years ago
			`Write a program that displays all digits in descending order, followed by a`
			`newline.`

Change titles format `sed -i 's/^\(#\+\) /\1# /' *.md` 6 years ago			`### Expected main and function for the program`
quest11 quest10 and quest8 6 years ago
Change titles format `sed -i 's/^\(#\+\) /\1# /' *.md` 6 years ago			`### Expected output`
quest11 quest10 and quest8 6 years ago
			```console
			`student@ubuntu:~/piscine/test$ go build`
			`student@ubuntu:~/piscine/test$ ./test`
			`9876543210`
			`student@ubuntu:~/piscine/test$`
			```