#include <iostream>
using namespace std;
class Circle{
protected:
    float radius;

public:
    Circle(float r):radius(r){}
};

class Cylinder : public Circle{
private:
    float height;

public:
    Cylinder(float r,float h):Circle(r),height(h){}

    float volume(){
        return (3.14*radius*radius*height);
    }
};

int main(){
    Cylinder c(3.5,6.1);
    cout<<c.volume();
}

#include <iostream>
using namespace std;

class smart_phone{
    int battery_life,camera_quality,user_interface;
    
public:
    smart_phone(int b,int c,int u):battery_life(b),camera_quality(c),
    user_interface(u){}
    
    bool operator > (smart_phone iphone){
        int  s_score=0,i_score=0;
        
        if(battery_life>iphone.battery_life)s_score++;
        else i_score++;
        
        if(camera_quality>iphone.camera_quality)s_score++;
        else i_score++;
        
        if(user_interface>iphone.user_interface)s_score++;
        else i_score++;
        
        return s_score>i_score;
    }
};
int main(){
    smart_phone samsung(9,9,9);
    smart_phone iphone(1,1,1);
    
    if(samsung>iphone)cout<<"first phone is superior";
    else cout<<"second phone is superior";
}

#include <iostream>
using namespace std;

class bank {
private :
    string AccountHolderName;
    int AccountNumber;
    double balance;
public:
    bank ( string AH, int AN,  double B) {
        AccountHolderName = AH;
        AccountNumber = AN;
        balance = B;
    }

    void deposit (double amount) {
        balance += amount;
   }
   
   void withDrawal(double amount);

   friend void display (bank bank);
};

 void bank::withDrawal(double amount) {
        balance -= amount;
   }

void display (bank bank) {
   cout << "your balance is : " << bank.balance << endl;
   };


int main()
{
    bank client = {"mogo", 78904, 1090};

    client.deposit(24.5);
    client.withDrawal(9.5);
    display(client);
    return 0;
}

#include <iostream>
using namespace std;

class Vehicle {
protected:
    string Make;
    int Model,LicensePlate;
public:
    Vehicle(string m,int mo,int l)
    : Make(m), Model(mo), LicensePlate(l) {}
    virtual void rent(){
    cout << "the virtual function" << endl;
    };
};

class Car : public Vehicle {
    bool serviced;
public:
    Car(string m,int mo,int l, bool s)
    : Vehicle(m,mo,l), serviced(s) {}
    void rent(){
        if (serviced) {
            cout<<"Car rented successfully"<<endl;
        } else {
            cout<<"Car cannot be rented"<<endl;
        }
    }
};

class Truck : public Vehicle {
public:
    Truck(string m, int mo, int l)
    : Vehicle(m, mo, l) {}
    void rent(){
        cout<<"Truck rented"<<endl;
    }
};

int main() {
    Car c("crown",2000, 61947, true);
    Truck t("Ford",2010 , 13512);

    Vehicle* ptr;

    ptr = &c;
    ptr->rent();

    ptr = &t;
    ptr->rent();

}

#include<iostream>
using namespace std;

class SecuritySystem{
protected:
    bool MotionDetection;
    string DoorWindow_Status;
    int FireSmoke_Levels;

public:
    SecuritySystem(bool MD, string DWS, int FSL): MotionDetection(MD), DoorWindow_Status(DWS), FireSmoke_Levels(FSL) {}
};

class HomeSecurity : public SecuritySystem {
public:
    HomeSecurity(bool MD, string DWS, int FSL): SecuritySystem(MD, DWS, FSL) {}

    void checkMD(){
    if(MotionDetection){
        throw "there is a Motion";
    }
    else
        cout << "there is no Motion" << endl;
    }

    void checkDWS(){
    if(DoorWindow_Status == "open") {
        throw "the Door and Window are not closed";
    }
    else
        cout << "the Door and Window are close" << endl;
    }

    void checkFSL(){
    if(FireSmoke_Levels > 50) {
        throw "the fire and somkes levels are not normal";
    }
    else
        cout << "the fire and somkes levels are normal" << endl;
    }
};


int main() {
HomeSecurity home1( false, "closed", 23);

try {
    home1.checkMD();
    home1.checkDWS();
    home1.checkFSL();
} catch(const char* msg){
        cerr << msg <<endl;
    }
}

#include<iostream>
using namespace std;
int main () {
for(int i=50;i<=65;++i) {
        if (i==57||i==62)continue;
        cout<<i<<',';
}
return 0;
}

#include<iostream>
using namespace std;
int main() {
int salary,performance_rating,years_of_service;
    float bonus=0;
    cin>>salary>>performance_rating>>years_of_service;
    if(years_of_service>=5) {
        if (performance_rating>8) {
            bonus=20;
        }else {
            bonus=10;
        }
    }else {
        if (performance_rating>8) {
            bonus=10;
        }else {
            bonus=5;
        }
    }
    cout<<"bonus:"<<bonus<<'%'<<endl;

return 0;
}

#include<iostream>
using namespace std;

int main () {
char drink_size;
    cin>>drink_size;
    switch (drink_size) {
        case 's':
            cout<<"small";
            break;
        case'm':
            cout<<"medium";
            break;
        case'l':
            cout<<"large";
        case'x':
            cout<<"extra large";
        default:
            cout<<"size not available";
    }
return 0;
}

#include <iostream> 
using namespace std; 
 
int main() { 
    int A[3][4]={{3,4,6,1},{4,8,0,9},{5,7,1,2}}; 
    int B[4][3]; 
 
    for (int i=0; i<3;i++) 
    { 
        for (int j=0;j<4;j++) 
    { 
        B[j][i]=A[i][j];  //       The main idea of the code 
    } 
    } 
    for(int i=0;i<4;i++) 
    { 
        for (int j=0;j<3;j++) 
        { 
            cout<<B[i][j]<<" "; 
         
        } 
        cout<<endl; 
    } 
    return 0; 
}

#include<iostream>
using namespace std;

int power(int base,int exponent) {
    int ans=1;
    for (int i=1;i<=exponent;i++) {
        ans*=base;
    }
    return ans;
}
int fact(int n) {
    int f=1;
    for (int i=1;i<=n;i++) {
        f*=i;
    }
    return f;
}
int main() {
    double x,n,sum=0;
    cin>>x>>n;
    for (int i=0;i<n;i++) {
        sum+=power(x,i)/fact(i);
    }
    cout<<sum;

}

#include<iostream>
using namespace std;

int mostf(int a[],int s) {
    int m=a[0];
    int c=0;
    for (int i=0;i<s;i++) {
        int counter=0;
        for (int j=0;j<s;j++) {
            if (a[i]==a[j]) {
                counter++;
            }
        }
        if (counter>c) {
            c=counter;
            m=a[i];
        }
    }
    return m;
}
int main() {
    int ar[8]={1,6,3,6,3,4,6,5};
    cout<<mostf(ar,8);
}