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Count Digits in a String

Read one line of text from input and print how many of its characters are digits (0-9). For the input a1b2c3, the output is exactly what is shown in Expected Output.

Expected Output:

3

= newline. The output ends with a newline — print one after the last line.

Hints4 available
Topics:
Strings
📥 Auto-Input:
a1b2c3
This input is automatically fed to your program's stdin
1
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Your Output

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Test Cases

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