Rust program to determine whether arguments are armstrong
Usage:
./armstrong-numbers [integers...]
example
./armstrong_numbers $(seq 20)
The number 1 is an armstrong number.
The number 2 is an armstrong number.
The number 3 is an armstrong number.
The number 4 is an armstrong number.
The number 5 is an armstrong number.
The number 6 is an armstrong number.
The number 7 is an armstrong number.
The number 8 is an armstrong number.
The number 9 is an armstrong number.
The number 10 is not an armstrong number.
The number 11 is not an armstrong number.
The number 12 is not an armstrong number.
The number 13 is not an armstrong number.
The number 14 is not an armstrong number.
The number 15 is not an armstrong number.
The number 16 is not an armstrong number.
The number 17 is not an armstrong number.
The number 18 is not an armstrong number.
The number 19 is not an armstrong number.
The number 20 is not an armstrong number.