有以下程序

void fun2(char a,char b) {printf("%c%c",a,b);}

char a="A",b="B";

void fun1(){ a="C" ; b="D"; }

main()

{ fun1( );

printf("%c%c",a,b);

fun2("E","F");

}

程序的运行结果是

A)CDEF

B)ABEF

C)ABCD

D)CDAB