1 begin
 2   fillchar(b,sizeof(b),#1); //true
 3   fillchar(c,sizeof(c),#1); //true  
 4   fillchar(d,sizeof(d),#1); //true  
 5   readln(n); //n皇后
 6   for i:=1 to n do
 7     for j:=1 to n do begin
 8       read(ch);
 9       if(ch=‘.‘) then w[i,j]:=false
10         else w[i,j]:=true;
11     end;
12   sum:=0;
13   tr(1);
14   writeln(sum);
15 end.

begin
  fillchar(b,sizeof(b),#1); //true
  fillchar(c,sizeof(c),#1); //true  
  fillchar(d,sizeof(d),#1); //true  
  readln(n); //n皇后
  for i:=1 to n do
    for j:=1 to n do begin
      read(ch);
      if(ch=‘.‘) then w[i,j]:=false
        else w[i,j]:=true;
    end;
  sum:=0;
  tr(1);
  writeln(sum);
end.

1 #include <stdio.h>
2 int main() {
3   float f = 123.456;
4   printf("%f,%10f,%10.2f,%.2f,%-10.2f\n", f, f, f, f, f);
5   return 0;
6 }

#include <stdio.h>
int main() {
  float f = 123.456;
  printf("%f,%10f,%10.2f,%.2f,%-10.2f\n", f, f, f, f, f);
  return 0;
}