perl 期末考试题（二）.pdfVIP

学 海 无 涯 PERL 复习题 一、选择题 B 1. What is the simplest type of data that Perl can work with? A element B scalar C vector D component 2. Which operator can be used to take the bottom item from an array? A pop B push C pull D plant 3. Which operator is used to arrange items in character order? A ascend B sort C arrange D descend 4. Rather than using print, what is often used in Perl when formatting is important? A printf B format C align D show 5. Which modifier can be used when matching in Perl to ignore case? A s B v C i D c 6. Which operator can be used to break up a string into more than one part based upon a separator? A chop B split C divide D parse 7. What option do you use when starting Perl to tell it to run in warning mode? __________ (Fill in the blank.) 8. Which control structure can be used to execute only a condition is false? A until B unless C while D without 9. Which of the following commands should be used to open a filehandle named KAREN to an existing file named sw? A open KAREN “sw”; B open KAREN, “sw”; 1 学 海 无 涯 C open “sw” KAREN; D open “sw”, KAREN; 10. Within Perl, which operator is used to change the working directory? A cd B chdir C pwd D wd 11. Which operator can be used to access the first item in an array? A shift B start C right$ D left$ 12. Within a loop, which operator immediately ends execution of the loop? A next B last C redo D leave 13. Which function can be used to make sure your program exits with a nonzero status even if there a standard error? A hash B noexit C nozero D die 14. Which of the following operators work most like simple searching/pattern matching? A /f B /g C s/// D m