Составление блок-схем.

uses crt;
var
a:array[1..100,1..100] of integer;
i,j,max,x,y,n:integer;
begin
clrscr;
write('Введите размер матрицы=');
readln(n);
writeln('Исходная матрица');
randomize;
for i:=1 to n do
begin
for j:=1 to n do
begin
a[i,j]:=random(51);
write(a[i,j]:3);
end;
writeln;
end;
writeln('Преобразованная матрица');
max:=0;
for i:=1 to n do
begin
for j:=1 to n do
if (a[i,j]>=max) then
begin
max:=a[i,j];
y:=j;
end;
x:=a[i,i];
a[i,i]:=a[i,y];
a[i,y]:=x;
max:=0;
end;
for i:=1 to n do
begin
for j:=1 to n do
write(a[i,j]:3);
writeln;
end;
readln;
end.

uses crt;
const n=7;
var a:array[1..n,1..n]of integer;
i,j:integer; 
begin
clrscr;
for i:=1 to n do
begin
a[i,i]:=1;
a[i,n-i+1]:=1;
end;
for i:=1 to n do
begin
a[i,(n div 2)+1]:=1;
a[(n div 2)+1,n]:=1;
end;
for i:=1 to n do
begin
for j:=1 to n do write(a[i,j],' ');
writeln;
end;
readln;
end.