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## dec2bin – Decimal do binary

Write a program that converts decimal numbers to binary,
i.e., from base 10 to base 2.

Input will consist of several lines each
with a decimal number *d*
of up to 9 decimal digits.

For each line of input,
output should contain a line
with the binary representation
of the corresponding input number.

#### Example Output

```
1
10
11
10010
1000
```

### Scoring

Submit your solution to be graded according to the following list:

- 1/6: works for the above example but produces output in an incorrect format
- 2/6: works for the above example and produces output in the correct format
- 5/6: works for other test cases
- 6/6: works for edge cases

### Hints

Remember the characters `'0'`

and `'1'`

are different
than the numeric values `0`

and `1`

.
You can create a function which converts between both
by using an `if`

or `case`

expression.

try first: digit-palindrome

try also: bin2dec

try next: dec2hex

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