任务一
1 #include<iostream>
2 #include<string>
3 #include<vector>
4 #include<array>
5 template<typename T>
6 void output1(const T &obj)
7 {
8 for(auto i:obj)
9 std::cout<<i<<",";
10 std::cout<<"\b\b\n";
11 }
12 template<typename T>
13 void output2(const T &obj)
14 {
15 for(auto p=obj.begin();p!=obj.end();++p)
16 std::cout<<*p<<",";
17 std::cout<<"\b\b\n";
18 }
19 void test_array()
20 {
21 using namespace std;
22 array<int,5> x1;
23 cout<<"x1.size()="<<x1.size()<<endl;
24 x1.fill(42);
25 x1.at(0)=999;
26 x1[4]=-999;
27 cout<<"x1:";
28 output1(x1);
29 cout<<"x1:";
30 output2(x1);
31 array<int,5> x2(x1);
32 cout<<boolalpha<<(x1==x2)<<endl;
33 x2.fill(22);
34 cout<<"x2:";
35 output1(x2);
36 swap(x1,x2);
37 cout<<"x1:";
38 output1(x1);
39 cout<<"x2:";
40 output1(x2);
41 }
42 void test_vector()
43 {
44 using namespace std;
45 vector<int>v1;
46 cout<<v1.size()<<endl;
47 cout<<v1.max_size()<<endl;
48 v1.push_back(55);
49 cout<<"v1:";
50 output1(v1);
51 vector<int> v2{1,0,5,2};
52 v2.pop_back();
53 v2.erase(v2.begin());
54 v2.insert(v2.begin(),999);
55 v2.insert(v2.end(),-999);
56 cout<<v2.size()<<endl;
57 cout<<"v2:";
58 output2(v2);
59 vector<int> v3(5,42);
60 cout<<"v3:";
61 output1(v3);
62 vector<int> v4(v3.begin(),v3.end()-2);
63 cout<<"v4:";
64 output1(v4);
65
66 }
67 void test_string()
68 {
69 using namespace std;
70 string s1{"oop"};
71 cout<<s1.size()<<endl;
72 for(auto &i:s1)
73 i-=32;
74 s1+="2023";
75 s1.append(",hello");
76 cout<<s1<<endl;
77
78 }
79 int main()
80 {
81 using namespace std;
82 cout<<"\n===========arry============="<<endl;
83 test_array();
84 cout<<"\n============vector=========="<<endl;
85 test_vector();
86 cout<<"\n===========string==========="<<endl;
87 test_string();
88 }
View Code1
任务二
1 #include <iostream>
2 #include <complex>
3 void test_std_complex()
4 {
5 using namespace std;
6 complex<double> c1{3, 4}, c2{4.5};
7 const complex<double> c3{c2};
8 cout << "c1 = " << c1 << endl;
9 cout << "c2 = " << c2 << endl;
10 cout << "c3 = " << c3 << endl;
11 cout << "c3.real = " << c3.real() << ", " << "c3.imag = " << c3.imag()<< endl;
12 cout << "c1 + c2 = " << c1 + c2 << endl;
13 cout << "c1 - c2 = " << c1 - c2 << endl;
14 cout << "abs(c1) = " << abs(c1) << endl;
15 cout << boolalpha;
16 cout << "c1 == c2: " << (c1 == c2) << endl;
17 cout << "c3 == c2: " << (c3 == c2) << endl;
18 complex<double> c4 = 2;
19 cout << "c4 = " << c4 << endl;
20 c4 += c1;
21 cout << "c4 = " << c4 << endl;
22 }
23 int main()
24 {
25 test_std_complex();
26 }
View Code2
任务三
1 #include <iostream>
2 #include <string>
3 using namespace std;
4 class T
5 {
6 public:
7 T(int x = 0, int y = 0);
8 T(const T &t);
9 T(T &&t);
10 ~T();
11 void set_m1(int x);
12 int get_m1() const;
13 int get_m2() const;
14 void display() const;
15 friend void func();
16 private:
17 int m1, m2;
18 public:
19 static void disply_count();
20 public:
21 static const string doc;
22 static const int max_count;
23 private:
24 static int count;
25 };
26 const string T::doc{"a simple class"};
27 const int T::max_count = 99;
28 int T::count = 0;
29 T::T(int x, int y): m1{x}, m2{y}
30 {
31 ++count;
32 cout << "constructor called.\n";
33 }
34 T::T(const T &t): m1{t.m1}, m2{t.m2}
35 {
36 ++count;
37 cout << "copy constructor called.\n";
38 }
39 T::T(T &&t): m1{t.m1}, m2{t.m2}
40 {
41 ++count;
42 cout << "move constructor called.\n";
43 }
44 T::~T()
45 {
46 --count;
47 cout << "destructor called.\n";
48 }
49 void T::set_m1(int x)
50 {
51 m1 = x;
52 }
53 int T::get_m1() const
54 {
55 return m1;
56 }
57 int T::get_m2() const
58 {
59 return m2;
60 }
61 void T::display() const
62 {
63 cout << m1 << ", " << m2 << endl;
64 }
65 void T::disply_count()
66 {
67 cout << "T objects: " << count << endl;
68 }
69 void func()
70 {
71 T t1;
72 t1.set_m1(55);
73 t1.m2 = 77;
74 t1.display();
75 }
76 void test()
77 {
78 cout << "T class info: " << T::doc << endl;
79 cout << "T objects max_count: " << T::max_count << endl;
80 T::disply_count();
81 T t1;
82 t1.display();
83 t1.set_m1(42);
84 T t2{t1};
85 t2.display();
86 T t3{std::move(t1)};
87 t3.display();
88 t1.display();
89 T::disply_count();
90 }
91 int main()
92 {
93 cout << "============类T============" << endl;
94 test();
95 cout << endl;
96 cout << "============友元函数func()============" << endl;
97 func();
98 }
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任务四
1 #include <iostream>
2 #include <string>
3 #include <iomanip>
4 using namespace std;
5 class Rect
6 {
7 public:
8 static const string doc;
9 Rect(double x=2.0,double y=1.0);
10 Rect(Rect &r);
11 double len(){return length;}
12 double wide(){return width;}
13 double area(){return(length*width);}
14 static int size_info(){return size;}
15 double circumference(){return 2*(length+width);}
16 void resize(int times);
17 void resize(int l_times,int w_times);
18 ~Rect();
19 private:
20 double length,width;
21 static int size;
22 };
23 const string Rect::doc("a simple rect class");
24 int Rect::size=0;
25 Rect::Rect(double x,double y)
26 {
27 length=x;
28 width=y;
29 size++;
30 }
31 void Rect::resize(int times)
32 {
33 length=length*times;
34 width=width*times;
35 }
36 void Rect::resize(int l_times,int w_times)
37 {
38 length=length*l_times;
39 width=width*w_times;
40 }
41 Rect::Rect(Rect &r)
42 {
43 length=r.length;
44 width=r.width;
45 size++;
46 }
47 Rect::~Rect()
48 {
49 --size;
50 }
51 void output(const Rect &r)
52 {
53 cout << "矩形信息: " << endl;
54 cout << fixed << setprecision(2);
55 Rect a;
56 a=r;
57 cout<<"长度"<<a.len()<<endl;
58 cout<<"宽度"<<a.wide()<<endl;
59 cout<<"周长"<<a.circumference()<<endl;
60 cout<<"面积"<<a.area()<<endl;
61 }
62 void test()
63 {
64 cout << "矩形类信息: " << Rect::doc << endl;
65 cout << "当前矩形对象数目: " << Rect::size_info()<< endl;
66 Rect r1;
67 output(r1);
68 Rect r2(4, 3);
69 output(r2);
70 Rect r3(r2);
71 r3.resize(2);
72 output(r3);
73 r3.resize(5, 2);
74 output(r3);
75 cout << "当前矩形对象数目: " << Rect::size_info()<< endl;
76 }
77 int main()
78 {
79 test();
80 cout << "当前矩形对象数目: " << Rect::size_info()<< endl;
81 }
View Code
任务五
1 #include <iostream>
2 #include <cmath>
3 using namespace std;
4 class Complex
5 {
6 public:
7 Complex(double a = 0, double b = 0) :a(a), b(b) {}
8 Complex(const Complex& x) ;
9 double get_real() { return a; }
10 double get_imag() const { return b; }
11 void show() const;
12 void add(const Complex &z);
13 ~Complex(){};
14 friend Complex add(const Complex &k,const Complex &l);
15 friend bool is_equal(const Complex &asd,const Complex &zxc);
16 friend double abs(const Complex &x);
17
18 private:
19 double a, b;
20 };
21 Complex::Complex(const Complex& x)
22 {
23 a = x.a;
24 b = x.b;
25 }
26 void Complex::show() const
27 {
28 if (b > 0)
29 cout << a << "+" << b << "i" ;
30 else if (b < 0)
31 cout << a << b << "i" ;
32 else
33 cout << a ;
34 }
35 void Complex::add(const Complex &z)
36 {
37 a = a + z.a;
38 b = b + z.b;
39 }
40 Complex add(const Complex &k,const Complex &l)
41 {
42 Complex s;
43 s.a=k.a+l.a;s.b=k.b+l.b;
44 return (s);
45 }
46 bool is_equal(const Complex &asd,const Complex &zxc)
47 {
48 if (asd.a == zxc.a && asd.b == zxc.b)
49 return (true);
50 else
51 return (false);
52 }
53 double abs(const Complex &x)
54 {
55 return(sqrt(x.a * x.a + x.b * x.b));
56 }
57
58
59 void test()
60 {
61 using namespace std;
62 Complex c1(3, -4);
63 const Complex c2(4.5);
64 Complex c3(c1);
65 cout << "c1 = ";
66 c1.show();
67 cout << endl;
68 cout << "c2 = ";
69 c2.show();
70 cout << endl;
71 cout << "c2.imag = " << c2.get_imag() << endl;
72 cout << "c3 = ";
73 c3.show();
74 cout << endl;
75 cout << "abs(c1) = ";
76 cout << abs(c1) << endl;
77 cout << boolalpha;
78 cout << "c1 == c3 : " << is_equal(c1, c3) << endl;
79 cout << "c1 == c2 : " << is_equal(c1, c2) << endl;
80 Complex c4;
81 c4 = add(c1, c2);
82 cout << "c4 = c1 + c2 = ";
83 c4.show();
84 cout << endl;
85 c1.add(c2);
86 cout << "c1 += c2, " << "c1 = ";
87 c1.show();
88 cout << endl;
89 }
90 int main()
91 {
92 test();
93 }
View Code
标签：const,int,double,void,Complex,实验,Rect From： https://www.cnblogs.com/dmsx/p/17763738.html