sudoku_matrix/t3board1.c

#include <stdio.h>
int f[9] = {0};
int t1[9][9] = {0}, t2[9][9] = {0}, t3[9][9] = {0};
int board[9][9] = {{8, 3, 0, 0, 7, 0, 0, 0, 0}, 
{6, 0, 0, 1, 9, 5, 0, 0, 0}, 
{0, 9, 8, 0, 0, 0, 0, 6, 0}, 
{8, 0, 0, 0, 6, 0, 0, 0, 3}, 
{4, 0, 0, 8, 0, 3, 0, 0, 1}, 
{7, 0, 0, 0, 2, 0, 0, 0, 6}, 
{0, 6, 0, 0, 0, 0, 2, 8, 0}, 
{0, 0, 0, 4, 1, 9, 0, 0, 5}, 
{0, 0, 0, 0, 8, 0, 0, 7, 9}};
void f1()
{
    printf("|");
    for (int i = 0; i < 23; i++)
    {
        printf("-");
    }
    printf("|\n");
}
void operate()
{
    for (int i = 0; i < 9; i++)
    {
        if (i % 3 == 0)
        {
            f1();
        }
        printf("| ");
        for (int j = 0; j < 9; j++)
        {
            if (j % 3 == 0 && j)
            {
                printf("| ");
            }
            printf("%d ", board[i][j]);
        }
        printf("|\n");
    }
    f1();
}
void judge()
{
    for (int i = 0; i < 9; i++)
    {
        for(int j = 0; j < 9; j++)
        {
            if (board[i][j])
            {
                t1[i][board[i][j] - 1]++;
                t2[j][board[i][j] - 1]++;
                t3[(i / 3) * 3 + j / 3][board[i][j] - 1]++;
            }
        }
    }
    for (int i = 0; i < 9; i++)
    {
        for (int num = 0; num < 9; num++)
        {
            if (t1[i][num] > 1)
            {
                printf("False:Invalid initial Sudoku matrix!\n");
                printf("      The number %d in the row %d has been used!", num + 1, i + 1);
                return;
            }
            else if (t2[i][num] > 1)
            {
                printf("False:Invalid initial Sudoku matrix!\n");
                printf("      The number %d in the col %d has been used!", num + 1, i + 1);
                return;
            }
            else if (t3[i][num] > 1)
            {
                printf("False:Invalid initial Sudoku matrix!\n");
                printf("      The number %d in the block %d has been used!", num + 1, i + 1);
                return;
            }
        }
    }
    printf("True:Valid initial Sudoku matrix!");
}
int main()
{
    printf("The original Sudoku matrix:\n");
    operate();
    judge();
}