题目内容

The input function that should be used when the user asks for a space in the input string is ( )

A. scanf()
B. getchar()
C. gets()
D. getc()

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There is the following function definition: void fun(int n, double x){ …… } If the variables in the following options are defined and assigned correctly, the correct call statement to function fun is ( )

A. fun(int y, double m);
B. k=fun(10,125);
C. fun(x,n);
D. void fun(n,x);

If there is the following definition: int x[10],*pt=x; The correct reference to an element of array x is ( )

A. *&x[10]
B. *(x+3)
C. *(pt+10)
D. pt+3

void fun (char a,char b) {a=b; (a)++; } main() { char c1='A', c2='a', p1, *p2; p1=&c1; p2=&c2; fun (p1,p2); printf("%c%c\n", c1,c2); } The output of the program is ( ).

Ab
B. aa
C. Aa
D. Bb

double a[10],*s=a; What can represent array element a [3] is ( ).

A. (*s)[3]
B. *(s+3)
C. *s[3]
D. *s+3