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# include <stdio.h>
# include <stdlib.h>
# include <time.h>
# define N 9
void print ( int matrix [ 9 ] [ 9 ] ) ;
int main ( )
{
srand ( time ( NULL ) ) ;
int matrix [ 9 ] [ 9 ] = { 0 } ;
int i = 1 , j = 1 ;
int col = 0 ;
int val = 0 ;
int k = 0 , l = 0 ; //此循环变量用于判断随机生成的数是否重复
int isrepeat = 0 ;
for ( i = 0 ; i < 9 ; i + + ) //每一行
{
for ( j = 0 ; j < 3 ; j + + ) //三个位置
{
label_col :
col = rand ( ) % 9 ;
if ( matrix [ i ] [ col ] ! = 0 )
{
goto label_col ; //如果随机生成的列对应的值不等于0，
}
else
{
if ( i > = 0 & & i < 3 )
{
label_val1 :
val = rand ( ) % 9 + 1 ; //生成随机数值
isrepeat = 0 ; //此变量用于记录随机数值是否重复
for ( k = 0 ; k < 3 ; k + + ) //此循环用于判断生成的值是否重复
{
for ( l = 0 ; l < 9 ; l + + )
{
if ( val = = matrix [ k ] [ l ] )
{
isrepeat = 1 ;
goto label_val1 ;
}
}
}
}
else if ( i > = 3 & & i < 6 )
{
label_val2 :
val = rand ( ) % 9 + 1 ; //生成随机数值
isrepeat = 0 ;
for ( k = 3 ; k < 6 ; k + + )
{
for ( l = 0 ; l < 9 ; l + + )
{
if ( val = = matrix [ k ] [ l ] )
{
isrepeat = 1 ;
goto label_val2 ;
}
}
}
}
else if ( i > = 6 & & i < 9 )
{
label_val3 :
val = rand ( ) % 9 + 1 ; //生成随机数值
isrepeat = 0 ;
for ( k = 6 ; k < 9 ; k + + )
{
for ( l = 0 ; l < 9 ; l + + )
{
if ( val = = matrix [ k ] [ l ] )
{
isrepeat = 1 ;
goto label_val3 ;
}
}
}
}
if ( isrepeat = = 0 )
{
matrix [ i ] [ col ] = val ;
}
}
}
}
print ( matrix ) ;
// for(i=0;i<9;i++)
// {
// for(j=0;j<9;j++)
// {
// printf("%d ",matrix[i][j]);
// }
// printf("\n");
// }
return 0 ;
}
void print ( int matrix [ 9 ] [ 9 ] )
{
int i = 0 , j = 0 ;
printf ( " |-----------------------------| \n " ) ;
for ( i = 0 ; i < N ; i + + ) {
printf ( " | " ) ;
for ( j = 0 ; j < N ; j + + ) {
printf ( " %2d " , matrix [ i ] [ j ] ) ;
if ( ( j + 1 ) % 3 = = 0 ) printf ( " | " ) ;
}
printf ( " \n " ) ;
if ( ( i + 1 ) % 3 = = 0 & & i < 8 ) {
printf ( " |-----------------------------| \n " ) ;
}
}
printf ( " |-----------------------------| \n " ) ;
}
