void main()
{
 float input;
	int i , j ;
 float arr = {0};
 int count  = 0;
 while(count < 12)
 {
   printf("insert a positive number\n");
   scanf("%f",&input);
   if(input > 0)//only positive..
   {
     arr = input;
     count++;
   }
   else
   {
    printf("please insert only positive numbers\n");
 } 
//now the printing
count = 0;
for(i = 0 ; i < 6 ; i++)//6 rows
{
  for(j = 0 ; j < 2 ; ++j)//each row 2 numbers
   {
     printf("%f  " , arr);
     count++;
    }
  printf("\n");
}
}
 
   
}