Lista 5 - Exercício 23

#include <stdio.h>

int main()
{
    int i,j,k,l,n,sum,prod;
    int m[9][9] = {
    {9,6,3,1,7,4,2,5,8},
    {1,7,8,3,2,5,6,4,9},
    {2,5,4,6,8,9,7,3,1},
    {8,2,1,4,3,7,5,9,6},
    {4,9,6,8,5,2,3,1,7},
    {7,3,5,9,6,1,8,2,4},
    {5,8,9,7,1,3,4,2,4},
    {5,8,9,7,1,3,4,6,2},
    {3,1,7,2,4,6,9,8,5}};

    for (i = 0; i < 9; i++) {
        for (j = 0; j < 9; j++) {
            for (k = j+1; k < 8 ; k++) {
                if (m[i][j] == m[i][k])
                    printf("ERRO DE LINHA! (LINHA %d)\n",i+1);
            }
            for (k = i+1; k < 8; k++) {
                if (m[i][j] == m[k][j])
                    printf("ERRO DE COLUNA! (COLUNA : %d)\n",j+1);
            }
            if ((i == 0 || i == 3 || i == 6)&&(j == 0 || j == 3 || j == 6)) {
                sum = 0;
                prod = 1;
                    for (k = i; k < i+3; k++) {
                        for (l = j; l < j+3; l++) {
                            sum += m[k][l];
                            prod *= m[k][l];
                        }
                    }
                if (sum != 45 || prod != 362880)
                    printf("ERRO DE SUBMATRIZ! (SUBMATRIZ DE PONTO INICIAL (%d,%d)\n",i+1,j+1);
            }
        }
    }
    return 0;
}