question mark

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question mark

Question marks ( ? ) are used to identify sentences that ask a question (technically known as interrogative sentences). They almost always appear at the end of a sentence, marking its conclusion (though there is a specific exception to this rule).
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question mark:

see punctuationpunctuation
[Lat.,=point], the use of special signs in writing to clarify how words are used; the term also refers to the signs themselves. In every language, besides the sounds of the words that are strung together there are other features, such as tone, accent, and pauses,
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question mark

(character)
"?", ASCII character 63.

Common names: query; ITU-T: question mark; ques. Rare: whatmark; INTERCAL: what; wildchar; huh; hook; buttonhook; hunchback.

Question mark is used, along with colon for C's lazy triadic "if" operator (similar to the IIF function in Visual Basic). The expression x?y:z evaluates x, then if x is true it returns y else it returns z.

In Unix shell file name patterns, question mark matches any single character.

question mark

In C programming, the question mark is used as a conditional symbol. For example, in the expression x1 ? x2 : x3, if x1 is not zero, then x2 is evaluated, otherwise x3 is evaluated.
References in periodicals archive ?
"That (the other 20 per cent)'s the question mark. Is he questioning you or are you putting question marks on him?
The midfielder was naturally upbeat after that victory but talk swirled once more when he also admitted "there's always that question mark" about his future.
This way, said Jimenez, the Comelec could show that the effect of changing the script was only to correct the encoding of the text so that the question mark would be displayed correctly as an n.
In the centre of the globe, there is a question mark in red, symbolising the bloodshed in the world, and encouraging people to put an end to this fire.
"There are question marks about his captaincy," he said yesterday.
The Prime Minister said there was "a big question mark" over the future of the single currency and he could not rule out a "double-dip" recession in the UK as a result.
After putting the team's parent company into voluntary liquidation, owner Paul Ragan must now deal with fresh question marks over the future of a permanent home for the Devils.
Arthur also said he had question marks over England's batting order.
NAO head Amyas Morse said: "It is worrying, when the money has already been removed from their budgets, that there are question marks hanging over claimed savings from the Department for Transport and the Home Office.
Question marks: After missing spring drills, will Lyle Moevao be fully recovered from winter shoulder surgery for August practices?
Mr Blix told Sky News the Prime Minister and those involved in compiling the Government's dossier on Iraq which was used to justify the war had "exercised spin", replacing question marks with exclamation marks.
Currently BA flies daily to Sao Paulo (with three flights going on to Rio, the other four terminating at Buenos Aires) with Varig on a similar schedule but question marks hang over the Brazilian national carrier.