Delphi 打印杨辉三角

program yanghui1;

{$APPTYPE CONSOLE}

uses
  SysUtils;

  var
  i,j,t,n:Integer;
  a:array[0..14,0..14] of Integer;
 begin
  write('请输入行数：');
  readln(n);
  for i:=0 to n-1  do
  begin
    a[i][0]:=1;        //初始化第一列
  end;

  for i:=1 to n-1 do
  begin
    for j:=1 to i do
    begin
      a[i][j]:=a[i-1][j-1]+a[i-1][j];
    end;
  end;
 // Writeln(a[15][7]);

  for i:=0 to n-1 do
  begin
  
    for t:=0 to n-i do
    begin
    write('':2);          //控制空格
    end;

    for j:=0 to i  do
    begin
     write(a[i][j]:4);     //输出对应的数
    end;

   Writeln;
  end;  
   Readln;


end.