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k / B63 OOP

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k revised this gist 2 weeks ago · 8c428e0

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k revised this gist 2 weeks ago · 93dbb60

9 files changed, 266 insertions

exp1.cpp (file created)
@@ -0,0 +1,22 @@
1 + #include <iostream>
2 + using namespace std;
3 +
4 + class Mobile
5 + {
6 + public:
7 + string brand;
8 + int price;
9 + void show()
10 + {
11 + cout << brand << " costs " << price << endl;
12 + }
13 + };
14 +
15 + int main()
16 + {
17 + Mobile m;
18 + m.brand = "Samsung";
19 + m.price = 15000;
20 + m.show();
21 + return 0;
22 + }
exp2.cpp (file created)
@@ -0,0 +1,23 @@
1 + #include <iostream>
2 + using namespace std;
3 +
4 + class Stud
5 + {
6 + public:
7 + int roll;
8 + void show()
9 + {
10 + cout << "Roll: " << roll << endl;
11 + }
12 + };
13 +
14 + int main()
15 + {
16 + Stud s[3];
17 + for (int i = 0; i < 3; i++)
18 + {
19 + s[i].roll = i + 1;
20 + s[i].show();
21 + }
22 + return 0;
23 + }
exp3.cpp (file created)
@@ -0,0 +1,35 @@
1 + #include <iostream>
2 + using namespace std;
3 +
4 + class Point
5 + {
6 + int x, y;
7 + public:
8 + Point(int a, int b)
9 + {
10 + x = a;
11 + y = b;
12 + }
13 + Point(Point &p)
14 + {
15 + x = p.x;
16 + y = p.y;
17 + }
18 + void show()
19 + {
20 + cout << "(" << x << ", " << y << ")" << endl;
21 + }
22 + ~Point()
23 + {
24 + cout << "Destructor" << endl;
25 + }
26 + };
27 +
28 + int main()
29 + {
30 + Point p1(2, 3);
31 + Point p2(p1);
32 + p1.show();
33 + p2.show();
34 + return 0;
35 + }
exp4.cpp (file created)
@@ -0,0 +1,24 @@
1 + #include <iostream>
2 + using namespace std;
3 +
4 + class Arr
5 + {
6 + int *p;
7 + public:
8 + Arr()
9 + {
10 + p = new int[5];
11 + cout << "Memory given" << endl;
12 + }
13 + ~Arr()
14 + {
15 + delete[] p;
16 + cout << "Memory freed" << endl;
17 + }
18 + };
19 +
20 + int main()
21 + {
22 + Arr a;
23 + return 0;
24 + }
exp5.cpp (file created)
@@ -0,0 +1,25 @@
1 + #include <iostream>
2 + using namespace std;
3 +
4 + int vol(int a)
5 + {
6 + return a * a * a;
7 + }
8 +
9 + float vol(float r, int h)
10 + {
11 + return 3.14 * r * r * h;
12 + }
13 +
14 + int vol(int l, int b, int h)
15 + {
16 + return l * b * h;
17 + }
18 +
19 + int main()
20 + {
21 + cout << "Cube: " << vol(3) << endl;
22 + cout << "Cylinder: " << vol(2.0f, 5) << endl;
23 + cout << "Box: " << vol(2, 3, 4) << endl;
24 + return 0;
25 + }
exp6.cpp (file created)
@@ -0,0 +1,24 @@
1 + #include <iostream>
2 + using namespace std;
3 +
4 + class Num
5 + {
6 + public:
7 + int x;
8 + bool operator==(Num n)
9 + {
10 + return x == n.x;
11 + }
12 + };
13 +
14 + int main()
15 + {
16 + Num a, b;
17 + a.x = 5;
18 + b.x = 5;
19 + if (a == b)
20 + cout << "Equal" << endl;
21 + else
22 + cout << "Not equal" << endl;
23 + return 0;
24 + }
exp7.cpp (file created)
@@ -0,0 +1,30 @@
1 + #include <iostream>
2 + using namespace std;
3 +
4 + class A
5 + {
6 + int x;
7 + public:
8 + A()
9 + {
10 + x = 100;
11 + }
12 + friend class B;
13 + };
14 +
15 + class B
16 + {
17 + public:
18 + void show(A a)
19 + {
20 + cout << "x = " << a.x << endl;
21 + }
22 + };
23 +
24 + int main()
25 + {
26 + A a;
27 + B b;
28 + b.show(a);
29 + return 0;
30 + }
exp8.cpp (file created)
@@ -0,0 +1,42 @@
1 + #include <iostream>
2 + using namespace std;
3 +
4 + class Shape
5 + {
6 + public:
7 + int a, b;
8 + void set(int x, int y)
9 + {
10 + a = x;
11 + b = y;
12 + }
13 + };
14 +
15 + class Rect : public Shape
16 + {
17 + public:
18 + void area()
19 + {
20 + cout << "Rect: " << a * b << endl;
21 + }
22 + };
23 +
24 + class Tri : public Shape
25 + {
26 + public:
27 + void area()
28 + {
29 + cout << "Triangle: " << 0.5 * a * b << endl;
30 + }
31 + };
32 +
33 + int main()
34 + {
35 + Rect r;
36 + Tri t;
37 + r.set(4, 5);
38 + t.set(4, 5);
39 + r.area();
40 + t.area();
41 + return 0;
42 + }
exp9.cpp (file created)
@@ -0,0 +1,41 @@
1 + #include <iostream>
2 + using namespace std;
3 +
4 + class Emp
5 + {
6 + public:
7 + virtual void pay()
8 + {
9 + cout << "Basic pay" << endl;
10 + }
11 + };
12 +
13 + class Manager : public Emp
14 + {
15 + public:
16 + void pay()
17 + {
18 + cout << "Manager pay 50000" << endl;
19 + }
20 + };
21 +
22 + class Clerk : public Emp
23 + {
24 + public:
25 + void pay()
26 + {
27 + cout << "Clerk pay 20000" << endl;
28 + }
29 + };
30 +
31 + int main()
32 + {
33 + Emp *e[2];
34 + Manager m;
35 + Clerk c;
36 + e[0] = &m;
37 + e[1] = &c;
38 + for (int i = 0; i < 2; i++)
39 + e[i]->pay();
40 + return 0;
41 + }