Extract Number From String

January 18, 2019

We have another string-handling exercise today:

Given a string containing a number, extract the number from the string. For instance, the strings “-123”, “-123junk”, “junk-123”, “junk-123junk” and “junk-123junk456” should all evaluate to the number -123.

Your task is to write a program to extract a number from a string. When you are finished, you are welcome to read or run a suggested solution, or to post your own solution or discuss the exercise in the comments below.

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