#include <stdio.h>

int main()
{
    int matrix[3][3] = {{1, 2, 3},
                        {4, 5, 6},
                        {7, 8, 9}};

    for (int i = 0; i < 3; i++)
        for (int j = 0; j < 3; j++)
            for (int l = 0; l < 3; l++)
                for (int c = 0; c < 3; c++)
                    if (i != l && j != c)
                        if (matrix[i][j] == matrix[l][c])
                            printf("Tem numero repetido na linha %d e coluna %d com o valor %d\n", i, j, matrix[i][j]);

    getchar();
    return 0;
}