[吸痂] 模考參考答案

看板NTUE-CS102作者yantchen (球童Yanting)時間14年前 (2010/06/18 22:29)推噓11(11推 0噓 11→)

留言22則, 8人參與討論串1/1

一、設計學生類別存三科成績兩個子類別男學生女學生存軍訓護理 class stu { protected: string id, name; float eng, math, com, sum; // sum=三科加總 public: void setId(string i) { id = i; } string getId() { return id; } void setName(string n) { name = n; } string getName() { return name; } void setEng(float e) { eng = e; } float getEng() { return eng; } void setMath(float m) { math = m; } float getMath() { return math; } void setCom(float c) { com = c; } float getCom() { return com; } void setSum() { sum = eng + math + com; } float getSum() { return sum; } }; class boy : public stu { float mil, sum2; // sum2=四科加總 public: void setMil(float m) { mil = m; } float getMil() { return mil; } void setSum2() { sum2 = eng + math + com + mil; } float getSum2() { return sum2; } }; class girl : public stu { float nur, sum2; // sum2=四科加總 public: void setNur(float n) { nur = n; } float getNur() { return nur; } void setSum2() { sum2 = eng + math + com + nur; } float getSum2() { return sum2; } }; 二、男學生成績輸入並用函數排序輸出 int main() { int i, n; boy *b; string id, name; float eng, math, com, mil; cout<<"有多少男生?"; cin>>n; b = new boy[n]; for(i = 0; i < n; i++) { cout<<"請輸入第"<<i+1<<"個學生的學號姓名英文數學程式軍訓成績:\n"; cin>>id>>name>>eng>>math>>com>>mil; b[i].setId(id); b[i].setName(name); b[i].setEng(eng); b[i].setMath(math); b[i].setCom(com); b[i].setMil(mil); b[i].setSum2(); } cout<<"排序中..\n"; rank(b, n); delete [] b; system("pause"); } void rank(boy *b, int n) { int i, j; boy t; for(i = 0; i < n - 1; i++) { for(j = i + 1; j < n; j++) { if(b[i].getSum2() < b[j].getSum2()) { t = b[i]; b[i] = b[j]; b[j] = t; } } } cout<<"名次\t學號\t姓名\t英文\t數學\t程式\t軍訓\t總分\n\n"; for(i = 0; i < n; i++) { cout << i+1 << '\t' << b[i].getId() << '\t' << b[i].getName() << '\t' << b[i].getEng() << '\t' << b[i].getMath() << '\t' << b[i].getCom() << '\t' << b[i].getMil() << '\t' << b[i].getSum2() << '\n'; } } 三、承上，改女學生只要把Mil改成Nur、boy改girl就可以 int main() { int i, n; girl *g; string id, name; float eng, math, com, nur; cout<<"有多少女生?"; cin>>n; g = new girl[n]; for(i = 0; i < n; i++) { cout<<"請輸入第"<<i+1<<"個學生的學號姓名英文數學程式護理成績:\n"; cin>>id>>name>>eng>>math>>com>>nur; g[i].setId(id); g[i].setName(name); g[i].setEng(eng); g[i].setMath(math); g[i].setCom(com); g[i].setNur(nur); g[i].setSum2(); } cout<<"排序中..\n"; rank(g, n); delete [] g; system("pause"); } void rank(girl *g, int n) { int i, j; girl t; for(i = 0; i < n - 1; i++) { for(j = i + 1; j < n; j++) { if(g[i].getSum2() < g[j].getSum2()) { t = g[i]; g[i] = g[j]; g[j] = t; } } } cout<<"名次\t學號\t姓名\t英文\t數學\t程式\t護理\t總分\n\n"; for(i = 0; i < n; i++) { cout << i+1 << '\t' << g[i].getId() << '\t' << g[i].getName() << '\t' << g[i].getEng() << '\t' << g[i].getMath() << '\t' << g[i].getCom() << '\t' << g[i].getNur() << '\t' << g[i].getSum2() << '\n'; } } 四、承上改存學生這題更簡單其實是個幌子直接用stu類別就好 int main() { int i, n; stu *s; string id, name; float eng, math, com; cout<<"有多少學生?"; cin>>n; s = new stu[n]; for(i = 0; i < n; i++) { cout<<"請輸入第"<<i+1<<"個學生的學號姓名英文數學程式成績:\n"; cin>>id>>name>>eng>>math>>com; s[i].setId(id); s[i].setName(name); s[i].setEng(eng); s[i].setMath(math); s[i].setCom(com); s[i].setSum(); } cout<<"排序中..\n"; rank(s, n); delete [] s; system("pause"); } void rank(stu *s, int n) { int i, j; stu t; for(i = 0; i < n - 1; i++) { for(j = i + 1; j < n; j++) { if(s[i].getSum() < s[j].getSum()) { t = s[i]; s[i] = s[j]; s[j] = t; } } } cout<<"名次\t學號\t姓名\t英文\t數學\t程式\t總分\n\n"; for(i = 0; i < n; i++) { cout << i+1 << '\t' << s[i].getId() << '\t' << s[i].getName() << '\t' << s[i].getEng() << '\t' << s[i].getMath() << '\t' << s[i].getCom() << '\t' << s[i].getSum() << '\n'; } } -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 120.127.36.183

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garfield112

06/18 22:32, , 1^F

06/18 22:32, 1^F

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yantchen

06/18 22:33, , 2^F

06/18 22:33, 2^F

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CaptainWill

06/18 22:41, , 3^F

06/18 22:41, 3^F