C++

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C++_Templates_No1

costinelglavan (1)
#include <cstdlib>
#include <iostream>
#include <vector>

using namespace std;
class Complex {
double mRe;
double mIm;

public:
Complex(double re, double im) {
mRe = re;
mIm = im;
}

double sqnorm() {
return mRe*mRe + mIm*mIm;
}
Complex& operator ++ ()
{
mRe++;
mIm++;
return *this;
}

Complex operator ++ (int)
{
Complex result(*this);
++(*this);
return result;
}

Complex operator+ (const Complex& c){

return Complex(c.mRe + this->mRe, c.mIm + this->mIm);
}
Complex operator- (const Complex& c){

return Complex(-c.mRe + this->mRe, -c.mIm + this->mIm);
}

bool operator <(Complex a) {
if (sqnorm() < a.sqnorm())
return true;
return false;
}

friend std::ostream& operator << (std::ostream &out, const Complex &c) {

out << c.mRe << " ";

if (c.mIm >= 0)
out << "+ " << c.mIm << "i";
else
out << c.mIm << "i";

return out;
}
};

template <class tip_celula> class VECT {
private:
tip_celula *start;
int numar_celule;
public:

VECT() {
start = 0;
numar_celule = 0;
}

void append(tip_celula valoare) {
int new_numar_celule = numar_celule + 1;
tip_celula *new_start = (tip_celula*) malloc(sizeof (tip_celula) * new_numar_celule);
// if (new_start == NULL)
// throw std::runtime_error("Insufficient RAM for vector !");

for (int i = 0; i < numar_celule; i++)
new_start[i] = start[i];

new_start[numar_celule] = valoare;
numar_celule = new_numar_celule;

if (start != 0) {
free(start);
start = new_start;
} else {
start = new_start;
}
}

tip_celula remove() {
if (numar_celule > 0) {
if (numar_celule > 1) {

tip_celula result = start[numar_celule-1];
numar_celule--;
return result;
}
else
{
tip_celula result = start[0];
free(start);
start = 0;
return result;
}
}
// else
// throw std::runtime_error("No cell in vector !");
}

tip_celula& operator[](int index) {
return start[index];
}

tip_celula at(int index) {
return start[index];
}

//friend std::ostream & operator<<(std::ostream &out, const tip_celula &c) {
// out << c;
// return out;
// }

friend std::ostream & operator<<(std::ostream &out, VECT &c) {
for (int i = 0; i < c.numar_celule; i++)
out << c[i] << " ";

return out;
}
};
void incrementByVal(int a) {
a++;
}

void incrementByRef(int& a) {
a++;
}
template <class T>
T getMint(T a, T b) {
if (a < b)
return a;
else
return b;
}

int minOf(int a, int b) {
if (a < b)
return a;
else
return b;
}
int mainSubiect2() {
int a, b, c, d;
std::cin >> a;
std::cin >> b;
std::cin >> c;
std::cin >> d;

Complex c1(a,b), c2(c,d);

VECT<Complex> vector;
vector.append(c1);
vector.append(c2);

std::cout << c1 << std::endl;
std::cout << c2 << std::endl;

std::cout << vector << std::endl;
std::cout << vector[0] << std::endl;

std::cout << c1 + c2 << std::endl;
std::cout << c1 - c2 << std::endl;

VECT<int> vectorint;
vectorint.append(a);
vectorint.append(b);
vectorint.append(c);
vectorint.append(d);

std::cout << vectorint[3] << std::endl;
return 0;
}

int main(int argc, char** argv) {
mainSubiect2();
}
Enoizat (1342)
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#include <iostream>

class Complex {
public:
    Complex (double re = 0.0, double im = 0.0);
    double sqnorm ();
    Complex & operator ++ ();
    Complex operator ++ (int);
    Complex operator + (const Complex & c);
    Complex operator - (const Complex & c);
    bool operator < (Complex a);

private:
    double mRe;
    double mIm;

// friend:
    friend std::ostream & operator << (std::ostream & out, const Complex & c);
};


Complex::Complex(double re, double im)
    : mRe { re },
      mIm { im }
{
}


double Complex::sqnorm()
{
    return mRe*mRe + mIm*mIm;
}


Complex & Complex::operator ++ ()
{
    ++mRe;
    ++mIm;
    return *this;
}


Complex Complex::operator ++ (int)
{
    Complex result(*this);
    ++(*this);
    return result;
}


Complex Complex::operator + (const Complex & c)
{
    return Complex(c.mRe + mRe, c.mIm + mIm);
}


Complex Complex::operator- (const Complex & c)
{
    return Complex(-c.mRe + mRe, -c.mIm + mIm);
}


bool Complex::operator < (Complex a)
{
    if (sqnorm() < a.sqnorm()) {
        return true;
    }
    return false;
}


std::ostream & operator << (std::ostream & out, const Complex & c)
{
    out << c.mRe << ' ';

    if (c.mIm >= 0) {
        out << "+ " << c.mIm << "i";
    } else {
        out << c.mIm << "i";
    }

    return out;
}


template <typename tip_celula> class VECT;

template <typename tip_celula>
std::ostream & operator<<(std::ostream & out, VECT<tip_celula> & c);


template <typename tip_celula>
class VECT {
public:
    VECT();
    void append(tip_celula valoare);
    tip_celula remove();
    tip_celula & operator[] (int index);
    tip_celula at(int index); // should check boundaries!!
    ~VECT();

private:
    tip_celula * start;
    int numar_celule;

// friend:
    friend std::ostream & operator<< <>(std::ostream & out, VECT<tip_celula> & c);
};


template <typename tip_celula>
VECT<tip_celula>::VECT()
    : start { nullptr },
      numar_celule {}
{
}


template <typename tip_celula>
void VECT<tip_celula>::append(tip_celula valoare)
{
    int new_numar_celule = numar_celule + 1;
    tip_celula * new_start = new tip_celula[new_numar_celule];

    for (int i = 0; i < numar_celule; ++i) {
        new_start[i] = start[i];
    }

    new_start[numar_celule] = valoare;
    numar_celule = new_numar_celule;

    if (start != nullptr) {
        delete [] start;
        start = new_start;
    } else {
        start = new_start;
    }
}


template <typename tip_celula>
tip_celula VECT<tip_celula>::remove()
{
    if (numar_celule < 1) {
        // throw?
        // return? What?
        // anywhay, exit - so, whe can assume numar_celule > 0
    }

    if (numar_celule > 1) {

        tip_celula result = start[numar_celule-1];
        --numar_celule;
        return result;
    }

    tip_celula result = start[0];
    delete [] start;
    start = nullptr;
    return result;
}


template <typename tip_celula>
tip_celula & VECT<tip_celula>::operator[] (int index)
{
    return start[index];
}


template <typename tip_celula>
tip_celula VECT<tip_celula>::at(int index) // should check boundaries!!
{
    return start[index];
}


template <typename tip_celula>
VECT<tip_celula>::~VECT()
{
    delete [] start;
}


template <typename tip_celula>
std::ostream & operator<< (std::ostream & out, VECT<tip_celula> & c)
{
    for (int i = 0; i < c.numar_celule; ++i) {
        out << c[i] << ' ';
    }
    return out;
}


void incrementByVal(int a);
void incrementByRef(int & a);
template <typename T> T getMint(T a, T b);
int minOf(int a, int b);
int mainSubiect2();


int main()
{
    mainSubiect2();
}


void incrementByVal(int a)  // This function is totally pointless
{                           // Maybe you want to return the incremented value?
    ++a;
}


void incrementByRef(int & a)
{
    ++a;
}


template <typename T>
T getMint(T a, T b)
{
    if (a < b) {
        return a;
    } else {
        return b;
    }
}


int minOf(int a, int b)
{
    if (a < b) {
        return a;
    } else {
        return b;
    }
}


int mainSubiect2()
{
    std::cout << "Please provide 4 integers separated by spaces: ";
    int a, b, c, d;
    std::cin >> a;
    std::cin >> b;
    std::cin >> c;
    std::cin >> d;

    Complex c1(a,b),
            c2(c,d);

    VECT<Complex> myvec;
    myvec.append(c1);
    myvec.append(c2);

    std::cout << c1 << '\n';
    std::cout << c2 << '\n';

    std::cout << myvec << '\n';
    std::cout << myvec[0] << '\n';

    std::cout << c1 + c2 << '\n';
    std::cout << c1 - c2 << '\n';

    VECT<int> vectorint;
    vectorint.append(a);
    vectorint.append(b);
    vectorint.append(c);
    vectorint.append(d);

    std::cout << vectorint[3] << '\n';
    return 0;
}

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