matrix/output.c

#include <stdio.h>

void output(int board[9][9]){
    int i;
    for(i = 0;i < 9 ;i++){
        if(i %3 == 0){
            printf("|-----------------------|\n");
        }
        printf("| %d %d %d | %d %d %d | %d %d %d |\n",
        board[i][0],board[i][1],board[i][2],board[i][3],board[i][4],board[i][5],board[i][6],board[i][7],board[i][8]);
    }
    printf("|-----------------------|\n");
}

int main(){
    int board[9][9] = {0};
    output(board);
    return 0;
}