下面关于模式匹配说法正确的是（） A: 模式匹配采用match关键字声明,每个分支采用case关键字声明 B: 如果所有case都不匹配，则会执行case_分支 C: 只可以在match中使用字符类型 D: 如果没有写case_分支，则会抛出MatchError异常

The case of noun are mainly ____________. A: accusative case B: dative case C: possessive case D: nominative case

Take this with you________you get into trouble. A: in case B: in the case C: in case of D: in no case

Be quiet ______ you wake the baby. A: in case of B: in any case C: in the case D: in case

______ fire, ring the alarm bell. A: In the case of B: In any case C: In no case D: In case of

Take your skates _____ you decide to go skating. A: in no case B: in case of C: in case D: in the case of

Write the telephone number down ____ you forget . A: in case of B: in case C: in a case D: in one case

case ,其中的表达式不正确的为( ) A: Case 100*a B: Case 0 To 100 C: Case Is<100 D: Case 0

下面程序段的输出结果是______。 int n= int n='c'; switch(n++) {default: printf("error"); break; case 'a': case 'A': case 'b': case 'B': printf("good"); break; case 'c': case 'C': printf("pass"); case 'd': case 'D': printf("warn"); }

多分支选择结构的Case语句，写法正确的是_______。 A: Case 1，5，7，9 B: Case 1 To 5 C: Case 5 To 1 D: Case Is