1. uses crt; const n=20; var i,cp1,cn1:integer; p,cp,cn:real; z:array[1..n] of integer; begin randomize; for i:=1 to n do begin z[i]:=random(20,-20); if z[i]>=0 then begin cp:=cp+z[i]; cp1:=cp1+1; end else begin cn:=cp+z[i]; cn1:=cn1+1; end; cp:=cp/cp1; cn:=cn/cn1; end; if cp>cn then p:=cp+cn else p:=cp*cn; for i:=1 to n do write(z[i],' '); writeln(#13#10,cp:5:2,' ',cn:5:2,' ',p:5:2); end. 2. uses crt; const n=15;m=4; var i,j,k,flag,count:integer; a:array[1..n,1..m] of integer; temp:array[1..100] of integer; b:array[1..100,1..m] of integer; begin randomize; k:=1; count:=0; for i:=1 to n do begin flag:=1; for j:=1 to m do begin a[i,j]:=random(51,1); if (a[i,j]<10) or (a[i,j]>40) then flag:=0 end; if flag=1 then begin temp[k]:=i; count:=count+1; k:=k+1; end; end; for i:=1 to count do for j:=1 to m do b[i,j]:=a[temp[i],j]; writeln('Массив A:'); for i:=1 to n do begin for j:=1 to m do write(a[i,j],' '); write(#13#10); end; if count=0 then writeln('Нет подходящих строк.') else begin writeln(#13#10,'Массив B:'); for i:=1 to count do begin for j:=1 to m do write(b[i,j],' '); write(#13#10); end; end; end.
1.
const n=10;
var a:array [1..n] of integer;
i:integer;
begin
for i:= 1 to n do read (a[i]);
write(' Массив: ');
for i:= 1 to n do write (a[i],' ');
writeln;
write('Массив в обратной последовательности: ');
for i:= n downto 1 do write (a[i],' ')
end.
2.
const n=10;
var a:array [1..n] of integer;
i,s:integer;
begin
for i:= 1 to n do read (a[i]);
write('Массив: ');
for i:= 1 to n do write (a[i],' ');
writeln;
write ('Номера нулевых элементов: ');
for i:= 1 to n do if a[i]<0 then
begin
a[i]:=0;
write(i,' ')
end
end.
3.
const n=10;
var a:array [1..n] of integer;
i,sp,kp,so,ko:integer;
begin
for i:= 1 to n do read (a[i]);
write('Массив: ');
for i:= 1 to n do write (a[i],' ');
writeln;
for i:= 1 to n do
begin
if a[i]>0 then
begin
sp:=sp+a[i];
kp:=kp+1
end;
if a[i]<0 then
begin
so:=so+a[i];
ko:=ko+1
end;
end;
writeln('Среднее арифметическое положительных элементов массива равно ',sp/kp:0:3);
writeln('Среднее арифметическое отрицательных элементов массива равно ',so/ko:0:3)
end.