gcc/program2.c

#include<stdio.h>
#include <stdlib.h>
#include <time.h>
void shuffleArray(int array[], int length) 
{
    srand(time(NULL));
    for (int i = length - 1; i > 0; i--) 
	{
        int j = rand() % (i + 1);
        int temp = array[i];
        array[i] = array[j];
        array[j] = temp;
    }
}
void output(int arry[9][9])
{
	int i,j;
	printf("|-----------------------|\n");	
	for(i=0;i<9;i++)
	{
		for(j=0;j<9;j++)
		{
			if(j==0)
				printf("| ");
			printf("%d ",arry[i][j]);
			if((j+1)%3==0)
			{
				printf("| ");	
			}
		}
		printf("\n");
		if((i+1)%3==0)
		{
			printf("|-----------------------|\n");
			
		}
		     
   }				 
}
int main()
{
	void output(int arry[9][9]);
	srand(time(NULL));
	int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9};
    int length = sizeof(array) / sizeof(array[0]);
    shuffleArray(array, length);
	int board[9][9]={0},number=0;
	for(int row=0;row<9;row++)
	{
		int k=1;
		while(k<4)
		{
			int col=rand()%9;
			if(board[row][col]==0)
			{
			    board[row][col]=array[number];
			    number++;
			    k++;
			}
		}
		if((row+1)%3==0)
		{
			number=0;
			shuffleArray(array, length);
		}
	}
	output(board);
}