Esercizio C++

#include <iostream>
#include <cstring>

using namespace std;

bool inversa(string l[m][n]){

    for (int q=0; p<n; p++) {
        for (int p=0; p<i; p++)
        {
            string tmp=l[m][n]
            int lung=tmp.length;
            //for (int
        }
    }
    return true;}

int main() {
    // input matrice stringhe
    int i,j;
    cout << "num righe: ";
    cin >> i;
    cout << endl << "num colonne: ";
    cin >> j;

    string matrix[i][j];
    for (int a=0; a<i; a++) {
        for (int b=0; b<j; b++) {
            cout << "Input[" << a+1 << "][" << b+1 << "]: ";
            cin >> matrix[a][b];
            }
        }


    // output matrice stringhe

    cout << endl;

    for (int a=0; a<i; a++) {
        for (int b=0; b<j; b++) {
            cout << matrix[a][b] << " ";
            }
        cout << endl;
        }
    cout << endl;
    bool ciao=inversa(matrix[i][j]);
    cout << ciao;
return 0;}