Linie/Coloana taie

#include <iostream>
#include <math.h>
using namespace std;
int m, n,a[100][100];
void citeste()
{
        for (int i = 0; i < m; i++)
                for (int j = 0; j < n; j++)
                        cin >> a[i][j];
}
void afiseaza()
{
        for (int i = 0; i < m; i++)
        {
                for (int j = 0; j < n; j++)
                        cout << a[i][j] << " ";
                cout << endl;
        }
}

void taielinie(int c)
{
        int tmp;
        for (int j = 0; j < n; j++)
        {
                tmp = a[m - 2][j];
                a[m - 2][j] = a[m - 1][j];
                for (int i = m - 2; i > c - 1; i--)
                {
                        int tmp2 = a[i - 1][j];
                        a[i - 1][j] = tmp;
                        tmp = tmp2;
                }

        }
        m -= 1;
}
void taiecoloana(int c)
{
        int tmp;
        for (int i = 0; i < m; i++)
        {
                tmp = a[i][n - 1];
                a[i][n - 2] = a[i][n - 1];
                for (int j = n - 2; j > c - 1; j--)
                {
                        int tmp2 = a[i][j - 1];
                        a[i][j - 1] = tmp;
                        tmp = tmp2;
                }

        }
        n -= 1;
}
int main()
{
        int a[100][100];
        cin >> m >> n;
        citeste();
        while (1)
        {
                cout << "1= taie linie;2=taie coloana"<<endl;
                int a,b;
                cin >> a;
                cin >> b;
                if (a == 1)
                        taielinie(b);
                else
                        taiecoloana(b);
                cout << endl;
                afiseaza();
        }
}