很多考生关注2023上半年软件设计师下午的真题及答案，希赛小编整理了网友回忆版2023上半年软件设计师下午真题答案（五），完整版真题可在本文文首或文末本文资料处下载。答案解析请考生关注考后公开课。

试题五：

阅读下列说明和C++代码，将应填入()处的字句写在对应栏内。

说明：

在某系统中，类interval代表由下界(lower bound)和上界(upper bound)定义的区间。要求采用不同的格式显示区间范围。如【lower bound.upper bound】;【lower bound...upper bound】;【lower bound-upper bound】.等现采用策略(strategy)模式实现该要求，得到如图6-1所示的类图。

【c++代码】

include using namespace std;

class Print strategy{

Public:

}(1) ;

class Interval{

Private:

double lower Bound;

double upper Bound;

Public

Interval (double P-lower,double P-upper ){

lower Bound=P-lower;

upper Bound=P-upper;

}void Print Interval (Print strategy prt ){

}2

double get lower (){

return lower Bound}

double get upper{

return upper Bound}

}

class Print Intervals (Comma: Public PrintsStrategy{

public:

void do Print (Interval *val ){

cout《“[＂《val→getLower()《“，”《val(→getupper()《”"]"《

end (:｝

}:

class Print IntervalsDots :Public PrintStrategy{

Public:

void do Print (Interval*val(){

cout《＂[＂《val→getLower()《"..."《val→getupper

()《"】"《

end li｝

｝:

class Print Intervals Line: Public PrintStrategy{

Public:

Void do Print (Interval*val(){

cout《＂[＂《val→getLower(）《“...”《val→getupper

()《"]”《

end li｝

enum TYPE COMMA.DOTs.LINE}

Print strategy*get strategy cint type

Print strategy*sti

switch(type){

case COMMA:

(3);

break;

case Dots:

(4)；

break:case LINE:

(5):

break:

}

return st;

}

int main(){

Interval a(1.7,2.1);

a.Print Interval(get strategy(commA);

a.Print Interval(get strategy(DoTs);

a.Print Interval(get strategy(LINE);

} return 0;