Private: double real

1-topshiriq.
#include

class Complex {

private:
double real;
double imag;

public:
Complex(double r = 0.0, double i = 0.0) : real(r), imag(i) {}

// Postfix decrement operator (i--)
Complex operator--(int) {
Complex temp(real, imag);
real--;
imag--;
return temp;
}

// Function to display the complex number

void display() {
std::cout << real << " + " << imag << "i" << std::endl;
}
};

int main() {

Complex num(5.0, 3.0);
std::cout << "Original complex number: ";
num.display();

Complex result = num--; // Postfix decrement

std::cout << "Complex number after decrement: ";
num.display();

std::cout << "Value returned from postfix decrement: ";

result.display();

return 0;

}
2-topshiriq.
#include
#include

int main() {

const int size = 100; // Massiv uzunligi
std::valarray arr(size);

// Massiv elementlarini to'ldiramiz

for (int i = 0; i < size; ++i) {
arr[i] = i;
}

// slice sinfini aniqlash

std::slice mySlice(0, size / 7, 7);

// slice orqali qadamdagilarni 27 tasini topish

std::valarray result = arr[mySlice] + 27;

// Natijalarni ekranga chiqarish

for (int i = 0; i < result.size(); ++i) {
std::cout << result[i] << " ";
}
std::cout << std::endl;

return 0;

}

3-topshiriq.

#include
#include