PLEASE TELL ME WHAT IS WRONG! I TRIED EVERYTHING!!!

#include<stdio.h>
#include<queue>
using namespace std;
struct Coord {int x,y;};
int a[40][40];
inline int number(int x,int y)
{
    int nr=0;
    if(a[x+1][y]==-1) nr++;
    if(a[x-1][y]==-1) nr++;
    if(a[x][y+1]==-1) nr++;
    if(a[x][y-1]==-1) nr++;
    return nr;
}
Coord make(int a,int b)
{
    Coord x;
    x.x=a;x.y=b;
    return x;
}
void lee(Coord s)
{
    int x,y;
    queue<Coord> q;
    q.push(s);
    a[s.x][s.y]=1;
    while(!q.empty())
    {
        x=q.front().x;y=q.front().y;
        if(a[x+1][y]==0) {a[x+1][y]=1;q.push(make(x+1,y));}
        if(a[x-1][y]==0) {a[x-1][y]=1;q.push(make(x-1,y));}
        if(a[x][y+1]==0) {a[x][y+1]=1;q.push(make(x,y+1));}
        if(a[x][y-1]==0) {a[x][y-1]=1;q.push(make(x,y-1));}
        q.pop();
    }
}
int main()
{
    int n,i,j;char ch;
    scanf("%d\n",&n);
    for(i=1;i<=n;i++,scanf("%c",&ch))
        for(j=1;j<=n;j++)
        {
            scanf("%c",&ch);
            if(ch=='.') a[i][j]= 0;
            else        a[i][j]=-1;
        }
    for(i=2;i<=n+1;i++)
        a[i][0]=a[0][i]=-1;
    for(i=0;i<n;i++)
        a[i][n+1]=a[n+1][i]=-1;
    lee(make(1,1));
    lee(make(n,n));
    int nr=0;
    for(i=1;i<=n;i++)
        for(j=1;j<=n;j++)
            if(a[i][j]==1)
                nr+=number(i,j);
    printf("%d\n",9*nr);
    return 0;
}

Is sample test case working for this program ?

WA1 usually means the new lines ( \n ) or ( \r\n ) are not handled correctly.