//PascalABC.NET (версия 3.1, сборка 1196 от 09.03.2016) const N = 10;
var a: array [1..N] of integer; i, j, b: integer;
begin for i := 1 to N do a[i] := Random(81) - 40; writeln('Элементы массива a: '); for i := 1 to N do write(a[i], ' '); writeln;
//сортировка не очень быстрая, но и массив маленький for j := 1 to n do for i := 1 to n - 1 do if a[i] < a[i + 1] then begin b := a[i]; a[i] := a[i + 1]; a[i + 1] := b; end; writeln; writeln('После сортировки : '); for i := 1 to N do write(a[i], ' '); writeln; end.
Объяснение:
1.
// описание функции, ее можно менять
function func(in_x:real):real;
begin
func:=-2*in_x*in_x*in_x*in_x*in_x + 4;
end;
var
h:real;
x:real;
a, b:real;
count_otr:integer;
begin
writeln('Input a = ');
readln(a);
writeln('Input b = ');
readln(b);
writeln('Input h = ');
readln(h);
count_otr:=0;
x:=a;
while (x <= b) do begin
{writeln('x = ', x:3:3, ' f = ', func(x));}
if (func(x)<0) then count_otr:=count_otr + 1;
x:=x+h;
end;
writeln(count_otr);
readln;
end.
2.
function func(in_x:real):real;
begin
func:=-2*in_x*in_x*in_x*in_x*in_x + 4;
end;
var
h:real;
x:real;
a, b:real;
f_min, x_min:real;
begin
writeln('Input a = ');
readln(a);
writeln('Input b = ');
readln(b);
writeln('Input h = ');
readln(h);
x_min:=a;
f_min:=func(a);
x:=a+h;
while (x <= b) do begin
{writeln('x = ', x:3:3, ' f = ', func(x));}
if (func(x)<f_min) then x_min:=x;
x:=x+h;
end;
writeln('x min = ', x_min:3:3, ', f min = ', func(x_min):3:3);
readln;
end.