uses crt; var a: array [1..20, 1..20] of real; i, j, k, n, s: integer; begin clrscr; write('Введите размер матрицы: '); read(n); for i := 1 to n do for j := 1 to n do begin write('A[', i, ',', j, ']= '); readln(a[i, j]); end; WRITELN; WRITELN; writeln('Исходная матрица ', n, 'x', n, ': '); for i := 1 to n do begin for j := 1 to n do WRITE(a[i, j]:2:0, ' '); WRITELN; end; k := 0; for i := 1 to n do begin for j := 1 to n do begin if a[i, j] = 0 then begin k := k + 1; s := s + 1; end; end; if k = n then writeln(i, ' строка состоит из нулей! '); k := 0; end; if s = 0 then writeln('В матрице нет нулевых строк'); end.
Объяснение:
const
max_elements = 1000;
a = 1;
b = 15;
first_file_name = '1.txt';
second_file_name = '2.txt';
var
i, j, n, r:integer;
p:real;
ar:array[1..max_elements] of integer;
f1, f2:text;
begin
randomize;
writeln('Input n = ');
readln(n);
for i:=1 to n do begin
ar[i]:=random(b-a+1)+a;
end;
assign(f1, first_file_name);
rewrite(f1);
for i:=1 to n do begin
writeln(f1, ar[i]);
end;
close(f1);
assign(f2, second_file_name);
rewrite(f2);
for i:=1 to n do begin
p:=1;
for j:=1 to i do
p:=p*ar[j];
writeln(f2, p:0:0);
end;
close(f2);
readln;
end.
