270102 , 270115 , 280201 , 270100 , 280200 .
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program example1;var x1, x2, y1, y2: Integer; d:Real; begin Writeln(' '); Writeln(' :'); Write('x1= '); Readln(x1); Write('y1= '); Readln(y1); Write('x2= '); Readln(x2); Write('y2 ='); Readln(y2); d:=sqrt(sqr(x2-x1)+sqr(y2-y1)); Writeln('d= ',d:6:2); Writeln(' Enter '); Readln; end.
:
| x1 | y1 | x2 | y2 | ||
| -4 | 5.00 | ||||
| 0.00 | |||||
| 5,83095 | 5.83 | ||||
| -23 | -4 | 19,41649 | 19.42 |
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Program example1; var x, f:Real; begin Write(' x: '); Readln(x); if x<-1 then f:= -x-1 else if (x>=-1) and (x<0) then f:= x-1 else if (x>=0) and (x<1) then f:= -x+1 else f:= x+1; Writeln('F= ',f:6:2); Readln; end.
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for, while, repeat ( . [1], c. 35-42).
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: 1 M . n , , n, . , 153 (153=13+53+33).
. i ( 1 ) . n, s i. i s , i , .
PROGRAM Primer_1;
var i,k,s,p,n,M: Integer;
begin
Write(' M '); Readln(M);
for i:=1 to M do
begin
s:=0; k:=i; n:=0;
while k<>0 do
begin k:=k div 10; n:=n+1 end;
k:=i;
While k<>0 do
begin p:=k mod 10; k:=k div 10;
if p<>0 then s:=s+ Round(Exp(n*Ln(p)))
end;
if s=i then Writeln(i);
end;
Readln;
end.
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1. f(x)=2 cos x+3, x ϵ{1; 4; 7,5; 20}. : - x, - f(x). : .
. , Real. . , - - fx. , .
program proc_1;
function f(x:Real):Real;
begin
f:=2*cos(x)+3
end;
procedure proc_f(x:Real;var fx:real);
begin
fx:=2*cos(x)+3
end;
var x,fx:real;
begin
Writeln(' :');
Writeln(' x f(x)');
x:=1; proc_f(x,fx); Writeln(x:6:2, fx:6:2);
x:=4; proc_f(x,fx); Writeln(x:6:2, fx:6:2);
x:=7.5; proc_f(x,fx); Writeln(x:6:2, fx:6:2);
x:=20; proc_f(x,fx); Writeln(x:6:2, fx:6:2);
Readln;
Writeln(' :');
Writeln(' x f(x)');
Writeln(1:6, f(1):6:2);
Writeln(4:6, f(4):6:2);
Writeln(7.5:6:2, f(7.5):6:2);
Writeln(20:6, f(20):6:2);
Readln;
end.
2. n- , : A1=1, A2=3, Ai=3Ai-2-Ai-1. 1 10 .
. , - Integer. ( i =1, i =2), case. if, . - , - for.
program proc_2;
function A(i:Integer):Integer;
begin
if i=1 then A:=1 else
if i=2 then A:=3 else :=3*A(i-2)-A(i-1)
end;
var i:Integer;
begin
for i:=1 to 10 do Write(A(i),' ');
Readln
end.
1. .
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3. 0,1; 0,2; 0,3; 0,4; 0,5; 0,6; 0,7; 0,8; 0,9; 1,0 . , :
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4. , . , . : V=πR2H, R , H .
5. . n . n ϵ{2,4,6,8,10}.
6. , f(x) x. : - x, - f(x).
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2. : an=aan-1.
3. , : Ai=Ai-1-Ai-2, i>2. i, .
4. : an=an-1+d, n >0. n, d a0 .
5. cos(cos(cos...cos(cos(cos x)))),
cos n . x n .
6. , :
y1=0; y2=10; yn=2×yn-1-yn-2, n>2.
7. , Bi=4Bi-1, i>1. i .
8.
bi=bi-1 q, i, q b0 .
9. sin(sin(sin...sin(sin(sin x)))), sin n . x n .
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x1=1; xn=xn-1+n+3, n≥2.
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program massiv_1;
const N=10;
type mas=array [1..N] of Real;
procedure Vvodmas(var A:mas);
var i:Integer;
begin
for i:=1 to N do A[i]:=-50+Random(101)+random;
end;
procedure Vivodmas(A:mas);
var i:Integer;
begin
for i:=1 to N do Write(A[i]:8:2);
Writeln
end;
function Summa(A:mas):real;
var i: Integer; s:real;
begin
s:=0;
for i:=1 to N do if A[i]>0 then s:=s+A[i];
Summa:=s;
end;
var A: mas;
begin
Randomize; Vvodmas(A);
Writeln(' :'); Vivodmas(A);
Writeln(': ', Summa(A):0:2);
Readln
end.
2. . , , (a, b) .
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n1 n2, p.
, max, . ( max. , .)
, , (a, b), .
const n=10; m=7;
type mas=array [1..n,1..m] of Integer;
procedure Vvodmas(var D:mas);
var i,j:Integer;
begin
for i:=1 to n do
for j:=1 to m do
D[i,j]:=-50+Random(101);
end;
procedure Vivodmas(D:mas);
var i,j:Integer;
begin
for i:=1 to n do
begin
for j:=1 to m do Write(D[i,j]:4);
Writeln;
end;
end;
procedure Obmen(a,b: real; var D:mas);
var i,j,p,n1,n2,max: Integer;
begin
for j:=1 to m do
begin
n1:=1; max:=abs(D[1,j]);{ }
for i:=2 to n do
if abs(D[i,j])>max then { }
begin n1:=i; max:=abs(D[i,j]) end;
i:=n; { , }
while (i>=1)and (D[i,j]>a)and(D[i,j]<b) do i:=i-1;
n2:=i;
if n2<>0 then { , (a,b), }
begin
p:=D[n1,j]; D[n1,j]:=D[n2,j]; D[n2,j]:=p; { }
end;
end;
end;
var D: mas; a,b:Real;
begin
Randomize; Vvodmas(D);
Writeln(' :'); Vivodmas(D);
Write(' (a,b): '); Readln(a,b);
Obmen(a,b,D);
Writeln(':'); Vivodmas(D);
Readln
end.
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