Transpose of matrix in C++

Question

Im not sure whats wrong with my code but its does not give any output it only takes input and after that my terminal ends the program im using ubunto linux .

here is my code

#include <iostream>
using namespace std;

int main()
{
    int A[3][3];
    int B[3][3];

    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 3; j++) {
            cout << "" << i << j << ": ";
            cin >> A[i][j];
        }
    }

    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 3; j++) {
            B[j][i] = A[i][j];
        }

        cout << endl;
    }

    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 3; j++) {
            cout << B[i][j];
        }

        cout << endl;
    }

    return 0;
}