A first difference with fundamental data types is that in order to declare and use objects (variables) of this type we need to include an additional header file in our source code: <string> and have access to the std namespace (which we already had in all our previous programs thanks to the using namespace statement).
criterion (plural criteria) A standard or test by which individual things or people may be compared and judged. 2013 November 30, Paul Davis, âLetters: Say it as simply as possibleâ, in The Economist, volume 409, number 8864: Congratulations on managing to use the phrase âpreponderant criterionâ in a chart (âOn your marksâ, November 9th). Was this the work of a kakorrhaphiophobic journalist set a challenge by his colleagues, or simply an example of glossolalia?
Definition of variable for Students. 1  1 : something that changes or can be changed. 2  2 : a symbol (as x or *) used in mathematics in the place of a numeral : placeholder.