It states zero or maybe more occurrence of whitespace characters, followed by a comma and after that followed by zero or more occurrence of whitespace people.

People two replaceAll calls will generally make precisely the same outcome, regardless of what x is. Having said that, it is important to note which the two normal expressions are certainly not precisely the same:

How can it be made a decision that a candidate has gained a point out Though not all of the votes are already noted?

Applying %s in scanf without having an explcit industry width opens the identical buffer overflow exploit that receives did; specifically, if you'll find extra characters inside the input stream when compared to the target buffer is sized to hold, scanf will happily compose All those excess characters to memory outside the buffer, probably clobbering anything vital. Unfortunately, as opposed to in printf, you can't provide the field with as being a operate time argument:

This really is rather regular error-examining code for a Python script that accepts command-line arguments.

The 1st regex will match one whitespace character. The second regex will reluctantly match one or more whitespace people. For most purposes, these two regexes are extremely equivalent, besides in the second case, the regex can match much more in the string, if it prevents the regex match from failing. from

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And since your 2nd parameter is empty string "", there is not any distinction between the output of two cases.

How do I prevent working overtime due to teenagers's lack of planning without harming them too poorly?

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The width is just not specified in the structure string, but as yet another integer price argument preceding the argument that should be formatted.

this assignation can be done at initialization like char phrase="this can be a term" // the word variety of chars got this string now and is particularly statically described

If the value is larger than four character positions broad, the sector width expands to support the appropriate website amount of people.

So the main if assertion interprets to: when you have not passed me an argument, I'm going to tell you how you need to pass me an argument in the future, e.g. you will see this on-display screen: