dsa

#include <iostream>
#include <cstdio>

using namespace std;

class Matrix
{
    int ln,col,**mat;
    public:
        Matrix(int n = 1,int  m = 1)
        {
            if(n != m)
            {
                cout << "Matricea nu este patratica !" << endl;
                return;
            }
            col = n;
            ln = m;

            mat = new int*[m];
            for(int i = 0; i < m; i++) mat[i] = new int[n];

            for(int i = 0; i < m; i++)
                for(int j = 0; j < n; j++)
                    mat[i][j] = 0;
        }
        Matrix operator+(const Matrix&) const;
        Matrix operator*(const Matrix&) const;
        Matrix operator^(const int&) const;
        bool checkSize(const Matrix&) const;
        void insertMat();
        void printMat();
        char* toString();
};
void Matrix::insertMat()
{
    if(this->ln != this->col) return;
    cout << "Introduceti elementele matricii" << endl;
    for(int i = 0; i < this->ln; i++)
    {
        for(int j = 0; j < this->col; j++)
        {
            cout << "[" << i << "][" << j << "] = ";
            cin >> this->mat[i][j];
        }
    }
}
void Matrix::printMat()
{
    cout << "Afisarea matricii\nDimensiune " << this->ln << "*" << this->col << endl;
    for(int i = 0; i < this->ln; i++)
    {
        for(int j = 0; j < this->col; j++)
        {
            cout << this->mat[i][j] << " ";
        }
        cout << endl;
    }
}
bool Matrix::checkSize(const Matrix &M) const
{        Matrix operator+(const Matrix&) const;
        Matrix operator*(const Matrix&) const;
        Matrix operator^(const int&) const;
    if(this->ln == M.ln && this->col == M.col) return true;
    return false;
}
Matrix Matrix::operator+(const Matrix &M) const
{
    if(!(*this).checkSize(M))
    {
        cout << "Matricile sunt de dimensiuni diferite !";
        return -1;
    }
    Matrix result(this->ln,this->col);
    for(int i = 0; i < this->col; i++)
    {
        for(int j = 0; j< this->ln;j++)
        {
            result.mat[i][j] = this->mat[i][j] + M.mat[i][j];
        }
    }
    return result;
}
Matrix Matrix::operator*(const Matrix &M) const
{
    if(!(*this).checkSize(M)))
    Matrix result(this->ln,this->col);
    for(int i = 0; i < this->ln; i++)
    {
        for(int j = 0; j < this->col; j++)
        {
            for(int k = 0; k < this->ln; k++)
            {
                result.mat[i][j] += this->mat[i][k]*M.mat[k][j];
            }
        }
    }
    return result;
}
Matrix Matrix::operator^(const int &p) const
{
    Matrix result(this->ln,this->col);

    for(int i = 1; i <= p; i++)
    {

    }
    result.mat = this->mat;
    return result;
}
int main()
{
    Matrix A(2,2),B(2,2),C(2,2);
    A.insertMat();
    A.printMat();
    C = A^2;
    C.printMat();
    return 0;
}