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The New C Standard- P10

Tham khảo tài liệu 'the new c standard- p10', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 6.5 Expressions 940 S 1 she vp visited the jeweler made the ring won the prize was given the man S 2 nP vP the prize the ring the jeweler the man at the fair np won np made np visited she liked was given vp vp vp at the fair Figure 940.2 Parse tree of a sentence with no embedding S 1 and a sentence with four degrees of embedding S 2 . Adapted from Miller and Isard. 952 Readers ability to comprehend syntactically complex sentences is correlated with their working memory capacity as measured by the reading span test. 742 Readers parse sentences left-to-right. 1102 An example of this characteristic is provided by so called garden path sentences in which one or more words encountered at the end of a sentence changes the parse of words read earlier 1707 reading span The horse raced past the barn fell. The patient persuaded the doctor that he was having trouble with to leave. While Ron was sewing the sock fell on the floor. Joe put the candy in the jar into my mouth. The old train their dogs. In computer languages the extent to which an identifier operand or subexpression encountered later in a full expression might change the tentative meaning assigned to what appears before it is not known. How do readers represent expressions in memory Two particular representations of interest here are the spoken and visible forms. Developers sometimes hold the sound of the spoken form of an expression in short-term memory they also fix their eyes on the expression. The expression becomes the focus of attention. This visible form of an expression the number of characters it occupies on a line and possibly other lines represents another form of information storage. Complicated expressions might be visually broken up into chunks that can be comprehended on an individual basis. The comprehension of these individual chunks then being combined to comprehend the complete expression particularly for expressions having a boolean role . These chunks may be based on the visible form of the .