6.設(shè)typedef char STRING[255]；STRING*s；，則s是(      )

A.字符數(shù)組                                              B.字符變量

C.字符指針數(shù)組                                       D.字符指針變量

7.設(shè)int x=6；，執(zhí)行語(yǔ)句X+=X-=X*X;后，x的值是(      )

A.-60                                                       B.0

C.6                                                          D.36

8.設(shè)int i=3，j=3；，表達(dá)式i+++j的值是(      )

A.6                                                          B.7

C.8                                                          D.9

9.下列為C語(yǔ)言保留字的是(      )

A.real                                                       B.long

C.pointer                                                  D.integer

10.設(shè)int a=2,b=6,c=8；，表達(dá)式(a,b),(c,10)的值是(      )

A.2                                                          B.6

C.8                                                          D.10

11.變量定義并初始化正確的是(      )

A.int a=l，*p=a；                                     B.int a=2，p=*a；

C.int a=3，p=＆a；                                   D.int a=4，*p=＆a；

12.使用遞歸函數(shù)計(jì)算n!(n=0，1，2，，3，....)的是(      )

A. fac(int n)                                              B. fac(int n)

{int i,f=- 1;                                                  {

 if(n==0) return 1;                                       if(n==0‖n==1) return 1;

 else for(i=1 ;i<=n;i++) f*=i;                          else return n*fac(n-1);

 return f;                                                     }

}

C. fac(int n)                                              D. fac(int n)

{int i=l,f=l;                                                {int i=1,f=1;

 if(n==0) return l;                                      if(n==0) return 1;

 else while(i<=n) f*=i++;                           else do { f*=i;}while (i++<n)

 return f;                                                  return f;

}                                                              }

13.設(shè)struct{int age;int num;}stu,*p=＆stu；

對(duì)結(jié)構(gòu)型變量stu的成員age引用錯(cuò)誤的是(      )

A.stu.age                                                  B.p->age

C.*p.age                                                  D.(*p).age

14.設(shè)int a[2]={1，2}，*p=a；，則*p是(      )

A.元素a[0]的值                                        B.元素a[0]的地址

C.元素a[1]的值                                        D.元素a[1]的地址

15.設(shè)int a[10]；，對(duì)數(shù)組元素引用正確的是(      )

A.a[10]                                                     B.a[′0′]

C.a(6)                                                      D.a[10-10]