#include <stdio.h>
#include <stdlib.h>
int main(void)
{
    char arr[100][100];
    int i,j,k,m;
    int n;
    printf("제일 긴 줄의 길이 입력: ");
    scanf("%d",&n);
   for(;n>100;)
    {          
                if(n>100)
                {printf("100보다 작거나 같은걸로 다시입력:");
                scanf("%d",&n);}
}
    for(i=0;i<n;i++)
    {  
        for(j=0;j<n;j++)
        {  
            arr[i][j]=' ';
        }//forj
    }//fori
    if(n%2==1)
    {   
              for(i=0;i<n;i++)
         {  
              if(i<=n/2)
              {   k=n/2-i;
                  for(j=k;j<k+i*2+1;j++)
                  {  
                      arr[i][j]='*';
                  }//forj
              }//if
              else
              {   k=i-n/2;
                  for(j=k;j<k+(n-i)*2-1;j++)
                  {  
                      arr[i][j]='*';
                  }//forj
              }//else
         }//fori  
    }//if
    else
    {
        for(i=0;i<n;i++)
        {  
            if(i<n/2)
            {   k=n/2-1-i;
                for(j=k;j<k+(i+1)*2;j++)
                {  
                    arr[i][j]='*';
                }//forj
            }//if
            else
            {   k=i-n/2;
                for(j=k;j<k+2*(n-i);j++)
                {  
                    arr[i][j]='*';
                }//forj
            }//else
        }//fori  
    }//else
    for(i=0;i<n;i++)
    {  
        for(j=0;j<n;j++)
        {  
            printf("%c ",arr[i][j]);
        }//forj
        printf("\n");
    }//fori
           
    system("pause");
    return 0;
}