#include <iostream>
using namespace std;

int main() 
{
    float r, area;
    cout<<" enter the radius : ";
    cin>>r;
    area = r * r * 3.14;
    cout<<" the area is : "<<area<<endl;
    
    return 0;
}

#include <iostream> 
using namespace std; 
 
int main()  
{ 
    char shape; 
    float side, length, width, area; 
 
    cout << "Enter the shape (S for square, R for rectangle): "; 
    cin >> shape; 
 
    switch (shape)  
 { 
        case 'S': 
        case 's': 
            cout << "Enter the side length of the square: "; 
            cin >> side; 
            area = side * side; 
            break; 
        case 'R': 
        case 'r': 
            cout << "Enter the length of the rectangle: "; 
            cin >> length; 
            cout << "Enter the width of the rectangle: "; 
            cin >> width; 
            area = length * width; 
            break; 
        default: 
            cout << "Invalid shape" << endl; 
    } 
 
    cout << "The area of the shape is: " << area << endl; 
 
    return 0; 
}

#include <iostream> 
using namespace std; 
 
int main() { 
    int numSeats; 
 
    cout << "Enter the number of seats in the car: "; 
    cin >> numSeats; 
 
    if (numSeats == 4)  
 { 
        cout << "This is a Saloon car." << endl; 
    }  
 else if (numSeats == 7) { 
        cout << "This is an SUV." << endl; 
    }  
 else if (numSeats > 7 && numSeats < 100 )  
 { 
        cout << "This is a Bus." << endl; 
    }  
 else  
 { 
        cout << "Invalid number of seats." << endl; 
    } 
 
    return 0; 
}

#include <iostream> 
using namespace std; 
 
int main()  
{ 
    int A = 7, B = 14; 
 
    A = A << 2;
    B = B << 2;
     
    B = A % B; 
 
    cout << "After left shifting A by 2: " << A << endl;
    cout << "After left shifting B by 2: " << B << endl; 
    cout << "After using modulus operator on B: " << B << endl; 
 
    return 0; 
}

#include <iostream> 
using namespace std; 
 
int main()  
{ 
    int C = 8, D = 4;
    
    C = C >> 1;
    D = D >> 1;
     
    C &= D; 
 
    cout << "After right shifting C by 1: " << C << endl;
    cout << "After right shifting D by 1: " << D << endl; 
    cout << "After using bitwise AND operato on C,D : " << C << endl; 
 
    return 0; 
}

#include <iostream> 
using namespace std; 
 
int main()  
{ 
    int N = 11, M = 9;
    
    N /= M;
    N |= M;
     
    cout << "After using Divide AND assignment operator : " << N << endl; 
    cout << "After using Bitwise inclusive OR and assignment operator : " << N << endl; 
 
    return 0; 
}

#include <iostream> 
using namespace std; 
 
int main()  
{ 
    int X = 1, Y = 0;
    
    cout << "After using Logical AND operator X,Y: " << (X&&Y) << endl; 
    cout << "After using Logical NOT Operator on X : " << !X << endl;
    cout << "After using Logical NOT Operator on Y : " << !Y << endl; 
 
    return 0; 
}

#include <iostream> 
using namespace std; 
 
int main()  
{ 
    char character;
    bool boolean;
    cout << "Size of char: " << sizeof(character) << " bytes" << endl; 
    cout << "Size of bool: " << sizeof(boolean) << " bytes" << endl; 
 
    return 0; 
}

#include <iostream> 
using namespace std; 
 
int main()  
{ 
    int integer; 
    float floatingPoint; 
 
    cout << "Size of int: " << sizeof(integer) << " bytes" << endl; 
    cout << "Size of float: " << sizeof(floatingPoint) << " bytes" << endl; 
 
    return 0; 
}

#include <iostream> 
using namespace std; 
 
int main()  
{ 
    char character; 
    double doubleonly; 
 
    cout << "Size of int: " << sizeof(character) << " bytes" << endl; 
    cout << "Size of float: " << sizeof(doubleonly) << " bytes" << endl; 
 
    return 0; 
}

#include <iostream> 
using namespace std; 
 
int main()  
{ 
    int U = 15, V = 8;
    bool areEqual = (U == V);
    bool isGreaterOrEqual = ( U >= V);
    
    cout << "Are the values of U and V equal? " << areEqual << endl; 
    cout << "Is U greater than or equal to V? " << isGreaterOrEqual << endl;
     
    return 0; 
}

#include <iostream> 
using namespace std; 
 
int main()  
{ 
    for ( int i = 95; i <= 105; i++)
    {
    if ( i == 101)
    {
    continue;
    }
    cout<<i<<", ";
    }
    cout<<endl;
     
    return 0; 
}

#include <iostream> 
using namespace std;  
int main ()  
{  
int a = 95;  
do 
{  
if( a == 101)  
{  
a = a + 1;  
continue;  
}  
cout <<a<<", "; 
a = a + 1;  
}
while( a <= 105);  
return 0;  
}

#include <iostream> 
 
using namespace std; 
 
int main() 
{ 
    int a , fac; 
    cout << "enter the number (a) : "; 
    cin >> a; 
    fac = 1; 
    for ( int i =1; i <= a ; i++) 
    { 
        fac = fac * i; 
    } 
    cout << "the fac of the entered number is : "<<fac<<endl;
    // or write ( cout << " the fac of the entered number is \n" ;
    return 0; 
}

#include <iostream>

using namespace std;

// وظيفة لتبديل قيمتين
void swapNumbers(int &num1, int &num2) {
    int temp = num1;
    num1 = num2;
    num2 = temp;
}

int main() {
    int number1, number2;

    // الحصول على إدخال المستخدم
    cout << "Enter the first number: ";
    cin >> number1;

    cout << "Enter the second number: ";
    cin >> number2;

    // استخدام الوظيفة لتبديل الأرقام
    swapNumbers(number1, number2);

    // عرض النتيجة
    cout << "After swapping, the numbers are: " << number1 << " and " << number2 << endl;

    return 0;
}

#include <iostream>
using namespace std;

// Function to calculate factorial recursively
int factorial(int n) {
    if (n == 0 || n == 1) {
        return 1;
    } else {
        return n * factorial(n - 1);
    }
}

int main() {
    int number;

    // Input the number from the user
    cout << "Enter a non-negative integer number: ";
    cin >> number;

    // Calculate and display the factorial of the number
    cout << "Factorial of " << number << " is: " << factorial(number) << endl;

    return 0;
}

#include <iostream> 
using namespace std; 
 
int mostFrequent(const int arr[], int size)  
{ 
    int mostFrequentNum = arr[0]; 
    int maxFrequency = 1; 
 
    for (int i = 0; i < size; ++i)  
 { 
        int currentNum = arr[i]; 
        int currentFrequency = 1; 
 
        for (int j = i + 1; j < size; ++j)  
  { 
            if (arr[j] == currentNum)  
   { 
                currentFrequency++; 
            } 
        } 
 
        if (currentFrequency > maxFrequency)  
  { 
            mostFrequentNum = currentNum; 
            maxFrequency = currentFrequency; 
        } 
    } 
 
    return mostFrequentNum; 
} 
 
int main()  
{ 
    int numbers[] = {1, 2, 3, 2, 3, 4, 2, 5}; 
    int size = sizeof(numbers) / sizeof(numbers[0]); 
 
    int result = mostFrequent(numbers, size); 
 
    cout << "The most frequent number is: " << result << endl; 
 
    return 0; 
}

#include <iostream>
using namespace std;

// دالة لحساب مجموع أربعة متغيرات من نوع long
long sum(long a, long b, long c = 0, long d = 0) {
    return a + b + c + d;
}

int main() {
    // تعيين أرقام ثابتة للاختبار
    long num1 = 10;
    long num2 = 20;
    long num3 = 30;
    long num4 = 40;

    // طريقة 1: استدعاء دالة sum() مع أربع متغيرات
    long result1 = sum(num1, num2, num3, num4);
    cout << "Method 1: Sum of " << num1 << ", " << num2 << ", " << num3 << ", " << num4 << " is: " << result1 << endl;

    // طريقة 2: استدعاء دالة sum() مع ثلاث متغيرات
    long result2 = sum(num1, num2, num3);
    cout << "Method 2: Sum of " << num1 << ", " << num2 << ", " << num3 << " is: " << result2 << endl;

    // طريقة 3: استدعاء دالة sum() مع متغيرين
    long result3 = sum(num1, num2);
    cout << "Method 3: Sum of " << num1 << ", " << num2 << " is: " << result3 << endl;

    return 0;
}

#include <iostream>
using namespace std;

int p ( int *ptr){
    *ptr+= 1;
    return *ptr;
}
int main() {
   int m = 5;
   
     cout << p(&m) << endl;
      cout << m << endl;
      cout << p(&m) << endl;
}

#include <iostream>
using namespace std;

int main() {
   int arr[] = {5, 7, 9};
   
         cout << *(arr+2) << endl;
}

#include <iostream>
using namespace std;

int main() {
   int arr[5] = {3, 5 , 7, 9, 11};

    for (int i = 0; i < 5; i++){
         cout << *(arr+i) << ", ";
    }
    cout<<endl;
}