,
.
JD2.
, JD ,
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2000 (
Y2K),
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, 29 .
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calendae (" ")
calendarium (" ").
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21 23
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365 5 48 46 (365,2422
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XVI .
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1 4713 ,
4712) ,
. JD (
) ,
, 0,0 0,99999
. 12
.
:
1 4712
. .. 12 JD = 0.00000
2 4712
. .. 12 JD = 1.00000
3 4712
. .. 18 JD = 2.25000
1 1900
. 12 JD = 2415021.0
22 1941
. 4 JD = 2430167.66667
9 1945 .
12 JD = 2431585.0
1 1999
. 12 JD = 2451180.0
1 2000
. 12 JD = 2451545.0
,
.
Borland C++ Builder Delphi
TDateTime,
(double).
, 30 1899 ,
.
.
.
8 double,
"YYYY/MM/DD HH:MM:SS" 20
. JD ( long),
4 . ,
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. Y , Y-1980
[0,119], 4 ,
5 . 32
.
, .
,
.
. ,
,
, .
, JD .
. , ,
, .
,
, .
, . . ,
.
,
. . JDI
-60
(Fliegel H. F., Van Flandern . . A Machine Algorithm for Processing
Calender Dates (algorithm 657). Communications of the ACM, 1968).
(Spaeth H. Ausgewaehlte Operations Research-Algorithmen
in FORTRAN. Wien, 1975) JDI.
JD2, ,
. " "
(.: , 1988). ,
.
,
.
.
JD1
JDI
(Y), ()
() 12 .
JDI JDI.C,
.
.
long JDI(int
Y,int M,int D) {
long q,j;
j=(M-14)/12;
q=Y+j+4800;
return D-32075L+1461*q/4+367L*(M-2-12*j)/12-3*((q+100)/100)
/4; }
, JDI
15.10.1582. .
,
,
.
JD2
( ,
, -
),
( 1 12) = D.T (D
, 0,00000 0,99999, ).
,
int -
.
>
2, y = Y m = M, = Y - 1 m = + 12.
15.10.1582, :
= int(/100)
= 2 - +
int(/4)
,
= . :
= int(365.25*)
> 0
= int(365.25
* - 0.75) < 0
JD :
JD = + int
(30. 6001 * (m+D) + DT + 1720994.5 +
, JD2
, 1.01.4713 . . ( Y = -4712, = 1,
= 1.5) . 12
.
.
JD3
JD3, ,
.
:
double JD3(int
Y,int M,double DT) {
return 367.0*Y-floor(7.0*(Y+floor((M+9.)/12.))/4.)+
floor(275.0*M/9.)+DT+1721013.5;
}
JD, 101,1600 (JD3 = 2305445.0),
(JD2 = = 2305448.0) 3 .
, JD3
1.03.1900. , JD3
JD2, 29.02.2100.
9.01.
JD, (Y), (),
, (
, ,
). ,
.
1 ()
,
.
JD2.
, JD ,
.
9_01.bas
DECLARE FUNCTION
JD! (Y%, M%, DT!)
REM
REM
( )
CLS
INPUT "
: ",Y%
INPUT "
: ",%
INPUT "
: ",DT
PRINT USING
"##### ### ###.#";Y%;M%;DT;
jdl=JD(Y%,M%,DT)
PRINT USING
" JD =#########.#####";jdl
END
FUNCTION JD(Y%,M%,DT)
' Y -
[-4713,9999]
' -
[1,12]
'
DT - [1,31]
'
DT - ,
'
[.0,.99999]
'
-
'
JD - ,
' 1
4713
'
JD - ,
' 12
JD
b%=0: yy%=Y%:
mm%=M%
IF M%<3 THEN
%=%-1: mm%=mm%+12
%=% \ 100
IF Y%+M% / 1001+DT/10000
> 1582.10151 THEN
b%=b%+2-a%+(a%
\ 4} END IF
c&=INT(365.25*yy%)
IF yy%<0 THEN c&=INT(365.25*yy%-.75)
JD=c&+INT(30.6001*(mm%+l))+DT+1720994.5#+b%
END FUNCTION
9_01.
#include <stdio.h>
#include <conio.h>
#include <math.h>
double JD (int
Y,int M,double DT);
main() {
int Y,M,day;
double DT,jd;
clrscr();
printf("\n
: ");
scanf("%d",&Y);
printf("\n
: ");
scanf("%d",SM);
printf("\n
: ");
scanf("%lf",&DT);
jd=JD(Y,M,DT);
printf("\n
JD =%15.5f",jd);
getch();
}
/*----------------------------------------*
/
/*----------------------------------------*
/
double JD(int Y,int M,double DT)
/*******************************************/
/*
*/
/*
( ) */
/* Y -
[-4713,9999] */
/* -
[1,12] */
/*
DT - [1,31] */
/*
DT - , */
/*
[.0,.99999] */
/*
- */
/*
JD - , */
/* 1
4713 */
/*
JD - , */
/* 12
JD */
{
int a,b=0,m,y;
long ;
y=Y;
m=M;
if (M<3)
{ y--; m += 12; }
a=y/100;
if(Y+M/100.+DT/10000
> 1582.1015)
b += 2-a+(int)(a/4.);
c=365.25*y;
if(y<0)c=365.25*y-0.75;
return c+(long)(30.6001*(m+1))+DT+1720994.5+b;
}
9_01.pas
program gd_t6_jd;
uses Crt;
var
Y,M,day:integer;
DT,jdl:double;
function JD(Y,M:integer;DT:double):double;
{ }
{
( ) }
{ Y -
[-4713,9999] }
{ -
[1,12] }
{
DT - [1,31] }
{
DT - , }
{
[.0,.99999] }
{
- }
{
JD - , }
( 1
4713 }
{
JD - , }
{ 12
JD }
var
a,b,mm,yy:integer;
:longint; begin
b:=0;
yy:=Y;
mm:=M;
if M<3 then begin yy:=yy-l;
mm:=mm+12;
end;
a:=yy div 100;
if (Y+M/100.+DT/10000)>1582.1015
then b:=b+2-a+(a div 4);
c:=trunc(365.25*yy);
if yy<0 then
c:=trunc(365.25*yy-0.75) ;
JD:=c+trunc(30.6001*(mm+1))+DT+1720994.5+b;
end;
begin
clrscr;
write('
: ');
readln(Y);
write('
: ');
readln(M);
write('
: ');
readln(DT);
write(Y:4,M:3,
' ',DT:3:1);
jdl:=JD(Y,M,DT);
writelnC JD
=', jdl:15:5) ;
readln; end.
9.02.
GD, ,
JD.
1 ()
,
.
.
.
JD+0.5 z , F . z > 2299161,
:
a=int((Z-1867216.25)/36524.25)
A=Z+l+a-int(a/4) z < 2299161
A=Z
=+1524
C=int((B-122.1)/365.25
D=int(365.25*C)
E=int((B-D)/30.6001)
DT=B-D-int(30.6001*E)
M=-1,
E<13.5
M=-13,
>13.5
Y=C-4716,
>2.5
Y=C-4715,
<2.5
9_02.bas
DECLARE SUB
GD(jd!,y%,m%,DT!)
REM
JD
- Y (), (),
REM DT (
,
CLS
INPUT "
: ",jd
GD jd,y%,m%,DT
PRINT USING
" = ##### = ## = ####";y%;m%;DT
END
SUB GD(jd,y%,m%,DT)
'
'
jd.
' % -
' m% -
' dt -
( ) ( )
DIM A AS LONG,
AS LONG, AS LONG, D AS LONG, Z AS LONG
DIM aa AS LONG,
E AS INTEGER, F AS DOUBLE
Z=INT(jd+.5)
F=jd+.5-Z
A=Z
IF Z>=2299161
THEN
aa=INT((Z-1867216.25#)/36524.25)
A=A+l+aa-(aa\4)
END IF B=A+1524
C=INT((B-122.1)/365.25) D=INT(365.25*C) E=INT((B-D)/30.6001)
DT=B-D-INT(30.6001*E)+F
IF E<13.5 THEN m%=E-l
ELSE m%=E-13
IF m%>2.5 THEN y%=C-4716
ELSE y%=C-4715
END SUB
9_02.
#include <stdio.h>
#include <conio.h>
void GD(double
jd,int *y,int *m,double *dt);
main () (
int Y,M;
double DT,jd;
clrscr () ;
printf("\n
: ");
scanf("%lf",&jd);
GD(jd, &Y,
&M, &DT) ;
printf("\n
l=%d =%d =%-15.51f",Y,M,DT);
getch();
}
/*--------------------------------------*/
void GD(double
jd,int *y,int *m,double *dt)
/*
*/
/*
jd */
/* - ,
m - */
/* dt -
( ) */
/*
( ) */
/**************************************/
{
long a,A,B,C,D,E, Z;
double F;
Z=jd+0.5;
F=jd+0.5-Z;
A=Z;
if(Z>=2299161)
{
a=(Z-1867216.25)/36524.25;
A += l+a-a/4;
}
B=A+1524;
C=(B-122.1)/365.25;
D=365.25*C; E=(B-D)/30.6001;
*dt=B-D-(int)(30.6001*E)+F;
if(E<13.5) *m=E-l;
else *m=E-13;
if(*m>2.5) *y=C-4716;
else *y=C-4715;
}
9_02.pas
program jd_to_gd;
{ JD - Y (), (), DT ( , }
uses crt; var
Y,M:integer;
DT,jd:double;
procedure GD(jd:double;
var y,m:integer; var dtrdouble);
{
}
{
jd }
{ - , m
- }
{ dt -
( ) }
(
( ) }
var
aa,A,B,C,D,E,Z:longint;
F:double; begin
Z:=trunc(jd+0.5);
F:=jd+0.5-Z;
A:=Z;
if Z>=2299161
then begin
aa:=trunc((Z-1867216.25)/36524.25);
A:=A+l+aa-(aa
div 4);
end;
B:=A+1524;
C:=trunc( (B-122.D/365.25)
;
D:=trunc(365.25*C);
E:=trunc((B-D)/30.6001);
dt:=B-D-trunc(30.6001*E)+F;
if E<13.5 then m:=E-l
else m:=E-13;
if m>2.5 then y:=C-4716
else y:=C-4715;
end;
begin
clrscr;
write('
: ');
readln(jd);
GD(jd,Y,M,DT);
writeln('
= ',Y:4,' = ',M:2,' = ',DT:4:1);
readln; end.
9.03.
dif_time, .
1 ()
. , ,
.
9_03.bas
DECLARE FUNCTION
JD! (Y%, M%, DT!)
DECLARE FUNCTION
DifTime! (Yl%, Ml%, DTI!, Y2%, M2%, DT2!)
REM
REM
: (Y1,M1,DT1) (Y2,M2,DT2)
CLS
INPUT "
: ",Y1%
INPUT "
: ",1%
INPUT "
: ",DT1
INPUT "
: ",Y2%
INPUT "
: ",2%
INPUT "
: ",DT2
PRINT "
=",DifTime(Y1%,M1%,DTI,Y2%,M2%,DT2)
END
FUNCTION DifTime
(Y1%,M1%,DTI,Y2%,M2%,DT2)
'
'
' Y1,Y2 -
1,2 -
'
DTI, DT2 -
'
DTI, DT2 -
jdl=JD(Y1%,M1%,DT1)
jd2=JD(Y2%,M2%,DT2)
DifTime=ABS(jdl-jd2)
END FUNCTION
FUNCTION JD(Y%,M%,DT)
DIM a AS INTEGER,
b AS INTEGER, mm AS INTEGER, yy AS INTEGER
DIM AS LONG
b=0
yy=Y%
mm=M%
IF M%<3 THEN
yy=yy-l: mm=mm+12
=\100
IF Y%+M%/100!+DT/10000>1582.1015#
THEN
b=b+2-a+a\4
END IF
c=INT(365.25*yy)
IF yy<0 THEN
c=INT(365.25*yy-.75)
JD=c+INT(30.6001*(iran+1))+DT+1720994.5#+b
END FUNCTION
9_03.
#include <stdio.h>
#include <conio.h>
#include <math.h>
double dif_time(int
Yl,int Ml,double DTI,
int Y2,int M2,double DT2);
double JD(int
,int M,double DT);
main () {
int Y1,Y2,M1,M2;
double DT1,DT2;
clrscr();
printf("\n
: ");
scanf("ld",&Yl);
printf("\n
: ");
scanf("%d",&Ml);
printf("\n
: ");
scanf("%lf",&DTD;
printf("\n
: ");
scanf("%d",SY2);
printf("\n
: ");
scanf("%d",&M2);
printf("\n
: "};
scanf("%lf",&DT2);
printf("\n
= %lf",dif_time(Y1,M1,DTI,Y2,M2,DT2));
getch(); }
/*----------------------------*/
double dif_time(int
Yl,int Ml,double DTI, int Y2,int M2, double DT2)
/*
*/
/*
*/
/* Y1,Y2 -
1,2 - */
/*
DTI, DT2 - */
/*
DTI, DT2 - */ /***************************************/
return fabs(JD(Yl,Ml,DTl)-JD(Y2,M2,DT2));
}
/*---------------------------------------------------*
/
double JD(int
Y,int M, double DT) {
int a,b=0,m,y;
long c;
y=Y;
m=M;
if (M<3)
{ y--; m += 12; }
a=y/100;
if(Y+M/100.+DT/10000
> 1582.1015)b +=
2-a+(int)(a/4.);
c=365.25*y;
if(y<0) c=365.25*y-0.75;
return c+(long)
(30.6001* (m+1))+DT+1720994.5+b; }
9_03.pas
program gd_to_jd;
{
: (Y1,M1,DT1)
(Y2,M2,DT2) }
uses Crt; var
Yl,Ml,Y2,2:integer;
DTI,DT2:double;
function JD(Y,M:integer;
DT:double):double;
var
a,b,mm,yy:integer;
c:longint;
begin
b:=0;
yy:=Y;
mm:=M;
if M<3 then begin yy:=yy-l;
mm:=mm+12; end;
a:=yy div 100;
if (Y+M/100.+DT/10000)>1582.1015
then b:=b+2-a+(a div 4};
c:=trunc(365.25*yy);
if yy<0 then
c:=trunc(365.25*yy-0.75);
JD:=c+trunc(30.6001*(mm+1))+DT+1720994.5+b;
end;
function dif_time(Yl,Ml:integer;
DTI:double;
Y2,M2:integer;
DT2:double):double;
{
}
{
}
{ Y1,Y2 -
1,2 - }
{
DTI, DT2 - }
{
DTI, DT2 - } begin
dif_time:=abs(JD(Y1,M1,DT1)-JD(Y2,M2,DT2)) ;
end;
begin
clrscr;
write('
: ');
readln(Yl);
write('
: ');
readln(Ml);
write('
: ');
readln(DTl);
write('
: ');
readln(Y2);
write('
: ');
readln(M2);
write('
: ') ; readln(DT2);
writeln('
= ',dif_time(Y1,M1,DT1,Y2,M2, DT2):10:0); readln; end.
9.04.
week_day, .
1 ()
:
=(JD+1.5)
mod 7
, , 1
( 4712 . .) JD=-0
. 5. 0 , 1 , 2
, ..., 6 .
2 ()
week_dayl ,
15.10.1582.
9_04.bas
DECLARE FUNCTION
JD!(Y%,M%,DT!)
DECLARE FUNCTION
WeekDay!(Y%,M%,D%)
REM
CLS
INPUT "
: ",Y%
INPUT "
: ",%
INPUT "
: ",D%
PRINT "
= ";WeekDay(Y%, M%, D%)
END
FUNCTION JD(Y%,M%,DT)
DIM a AS INTEGER,
b AS INTEGER, mm AS INTEGER, yy AS INTEGER
DIM AS LONG
b=0
yy=Y%
mm=M%
IF M%<3 THEN
yy=yy-l: mm=ram+12
a=yy\100
IF Y%+M%/100!+DT/10000>1582.1015#
THEN
b=b+2-a+a\4
END IF
c=INT(365.25*yy)
IF yy<0 THEN c=INT(365.25*yy-.75)
JD=c+INT(30.6001*(mm+1))+DT+1720994.5#+b
END FUNCTION
FUNCTION WeekDay(Y%,M%,D%)
'
' Y -
' -
(1 - 12)
' D - (1
- 31)
'
:
'
0 - ., 1 - ., 2 - ,...
WeekDay=INT(JD(Y%,M%,D%+1.5)) MOD 7
END FUNCTION
9_04.
#include <stdio.h>
#include <conio.h>
#include <math.h>
int week_day(int Y,int M,int D);
double JD(int
Y,int M,double DT);
main() {
int Y,M,D,day;
clrscr();
printf("\n
: ") ;
scanf("%d",&Y);
printf("\n
: ");
scanf("%d",&M);
printf("\n
: ") ;
scanf("%d",&D);
day=week_day
(Y, M, D) ,-
printf("\
= %d",day) ;
getch();
}
/*--------------------------------*/
int week_day(int
,int M,int D)
/*
*/
/*
: */
/* 0 - ., 1 - ., 2 - ,... */
/************************************/
{
return (long)(JD(Y,M,(double)D)+1.5)
% 7;
}
/*---------------------------------*/
double JD(int
Y,int M,double DT) int a,b=0,m,y;
long c;
y=Y;
m=M;
if (M<3)
{ y--; m += 12; }
a=y/100;
if(Y+M/100.+DT/10000
> 1582.1015) b += 2-a+(int)(a/4.);
c=365.25*y;
if(y<0)c=365.25*y-0.75;
return c+(long)(30.6001*(m+1))+DT+1720994.5+b;
}
week_day1.
int week_dayl(int
Y, int M, int D)
{
/********************************/
/*
*/
/*
: */
/* 1 - .,
2 - ,..., 7 - */
int q,m;
q=M+10;
m=(M-14)/12+Y;
return ((13*(q-(q/13)*12)-1)/5+D+77+5*
(m%100) /4 +
m/400-(m/100)*2)%7;
}
9_04.pas
program WeekDay;
{
}
uses Crt;
var
Y,M,D,day:integer;
function JD(Y,M:integer;
DT:double):double; var
a,b,mm,yy:integer;
:longint; begin
b:=0;
yy:=Y;
mm:=M;
if M<3 then begin yy:=yy-l;
mm:=mm+12; end;
a:=yy div 100;
if (Y+M/100.+DT/10000)>1582.1015
then b:=b+2-a+(a div 4);
c:=trunc(365.25*yy);
if yy<0 then
c:=trunc(365.25*yy-0.75) ;
JD:=c+trunc(30.6001*(mm+l))+DT+1720994.5+b;
end;
function week_day(Y,M,D:integer):integer;
{
}
{ Y -
}
{ -
(1-12) }
{ D - (1
- 31) }
{
: }
{ 0 - .,
1 - ., 2 - ,... }
begin
week_day:=trunc(JD(Y,M,D+1.5))
mod 7; end;
begin
clrscr;
write('
: ') ;
readln(Y);
write('
: ') ;
readln(M);
write ('
: ');
readln(D);
day:=week_day(Y,M,D);
writeln('
= ',day);
readln; end.
9.05.
dat_to_ord, .
1 ()
, . :
N=int(275*M/9)-2*int((+9)/12)+D-30
:
N=int(275*M/9)-int((+9)/12)+D-30
9_05.bas
DECLARE FUNCTION
DatToOrd!(y%,M%,D%)
REM
REM
( - , m -, d - )
CLS
INPUT "
: ",%
INPUT "
: ",%
INPUT "
: ",D%
PRINT " = ";
DatToOrd(%,M%,D%)
END
FUNCTION DatToOrd(y%,M%,D%)
DIM a1 AS INTEGER,
a2 AS INTEGER
al=(M%+9)\12
a2=INT(275!*M%/9!}-a1+D%
IF (y% MOD 400=0)
OR ( (y MOD 4=0) AND (y MOD 100<>0) ) THEN DatToOrd=a2-30
ELSE DatToOrd=a2-al-30
END IF
END FUNCTION
9_05.c
#include <stdio.h>
#include <conio.h>
int dat_to_ord(int
y,int m,int d) ;
main() {
int Y,M,D;
clrscr();
printf("\n
: ");
scanf("%d",&Y);
printf("\n
: ");
scanf("%d",&M);
printf("\n
: ");
scanf("%d",&D)
;:
printf("\n
= %d", dat_to_ord(Y,M,D));
getch();
}
/*-----------------------------------------*/
int dat_to_ord(int y,int m,int d)
{
int a1,a2;
al=(m+9.0)/12.0;
a2=(275.0*m/9.0)-a1+d-30;
if((y%400==0)||((y%4==0)&&(y%100!=0)))
return a2;
return a2-a1;
}
9_05.pas
program ord
day;
Crt; var
Y,M,D:integer;
function dat_to_ord(y,m,d:integer):integer;
{
( - , m - , d - ) } var
al,a2:integer;
begin
al:=(m+9) div
12;
a2:=trunc(275.0*m/9.0)-al+d-30;
if((y mod 400
= 0) OR {(y mod 4=0) AND (y mod 100 <>0))) then dat_to__ord: =a2
else dat_to_ord:=a2-al;
end;
begin
clrscr;
write('
: ');
readln(Y);
write('
: ');
readln(M);
write('
: ');
readln(D);
writeln('
= ', dat_to_ord(Y,M,D));
readln;
end.
9.06.
month_day, (M) (D)
(N) .
1 ()
, . , = 1889
= 1523 .
:
B=int((N+A-122.1)/365.25)
C=N+A-int(365.25*B)
E=int(C/30.6001)
M=E-1 <13.5
M=E-13 >13.5
D=C-int(30.6001*E)
9_06.bas
DECLARE SUB
MonthDay(Y%,OrdDay%,M%,D%)
R
CLS
INPUT "
: ",Y%
INPUT "
: ",OrdDay%
MonthDay Y%,OrdDay%,%,D%
PRINT "
= ",%;" = ";D%
END
SUB MonthDay(Y%,OrdDay%,M%,D%)
'
Y%
'
ord_day%
' % -
' D% -
DIM A AS INTEGER,
AS INTEGER, AS INTEGER, E AS INTEGER
A=1889
IF (Y% MOD 400=0)OR((Y%
MOD 4=0)AND(Y% MOD l00<>0) ) THEN A=1523
B=INT((OrdDay%+A-122.1)/365.25)
C=OrdDay%+A-INT(365.25*B)
E=INT(C/30.6001)
IF E<13.5
THEN M%=E-1 ELSE M%=E-13'
D%=C-INT(30.6001*E)
END SUB
9_06.
#include <stdio.h>
,
#include <conio.h>
#include <math.h>
void month_day(int
Y,int ord_day,int *M,int *D);
main() {
int Y,M, D,ord_day;
clrscr();
printf("\n
: ");
scanf("%d",&Y);
printf("\n
: ");
scanf("%d",&ord_day);
month_day(Y,ord_day,&M,
&D);
printf("\n
= %d = %d",M,D);
getch();
}
/*-------------------------------------*/
void month_day(int Y,int ord_day,int *M,int *D)
/*************************************/
/* Y */
/* ord_day */
/* -
*/
/* D - */
/****************************************/
{
int A=1889,B,C,E;
if((Y%400==0)||((Y%4==0)&&(Y%100!=0)))
A=1523;
B=(ord_day+A-122.1)/365.25;
C=ord_da>y+A-floor
(365. 25*B) ;
E=C/30.6001;
if(E<13.5)
*M=E-1; else *M=E-13;
*D=C-floor(30.6001*E);
}
9_06.pas
program ord_to_dat;
uses Crt;
var
Y,M,D,ord_day:integer;
procedure month_day(Y,ord_day:integer;var
M,D:integer);
{
Y }
{
ord_day }
{ -
}
{ D -
} var
,, ,:integer;
begin
:=1889;
if(Y mod 400
= 0) OR ((Y mod 4 = 0)AND(Y mod 100 <>0))) then A:=1523;
B:=trunc((ord_day+A-122.1)/365.25)
;
C:=ord_day+A-trunc(365.25
* B);
E:=trunc(C/30.6001);
if(E<13.5)
then M:=E-1 else M:=E-13;
D:=C-trunc(30.6001*E);
end; begin
clrscr;
write('
: ');
readln(Y);
write ('
: ');
readln(ord_day);
month_day(Y,ord_day,M,D);
writeln('Ey
= ',, ' = ',D);
readln; end.
9.07.
max_day, .
1 ()
,
.
400 4,
100.
9_07.bas
DECLARE FUNCTION
MaxDay!(Y%,M%)
REM
DATA 31,28,31,30,31,30,31,31,30,31,30,31
DIM SHARED DAYS(1
TO 12)
FOR J=l TO 12:
READ DAYS(J): NEXT J
CLS
INPUT "
: ",Y%
INPUT "
: ",M%
PRINT " = ";
MaxDay (Y%,M%)
END
FUNCTION MaxDay(Y%,M%)
MaxDay=DAYS(M%)
IF M%<>2
THEN EXIT FUNCTION
IF (Y% MOD 400=0)OR((Y%
MOD 4=0)AND(Y% MOD 100<>0) ) THEN MaxDay=29
END IF END FUNCTION
9_07.
#include <stdio.h>
#include <conio.h>
int max_day(int
Y, int M);
main() . {
int Y,M;
printf("\n
: ");
scanf("%d",&Y);
printf("\3
: ");
scanf("%d",&M);
printf("\n
= %d",max_day(Y,M));
getch();
}
/*--------------------------------------*/
int max_day(int
Y, int M)
{ int days[]={31,28,31,30,31,31,30,31,30,31,30,31);
if(M != 2) return
days[M-l];
if{(Y%400==0)||((Y%4==0)&&(Y%100!=0))}
return 29;
return 28; }
9_07.pas
program days_in_month;
{
}
var
Y,M:integer;
function max_day(Y,M:integer):integer;
const
days:array[1..12] of byte=(31,28,31,30,31,30, 31, 31, 30, 31, 30, 31);
begin
max_day:=days[M];
if(M<>2)
then exit;
if((Y mod 400=0)OR((Y
mod 4=0)AND(Y mod l00<>0) ) ) then
max_day:=29;
end; begin
write('
: ');
readln(Y);
write('
: ');
readln(M);
writeln('
= ',max_day(Y,M));
readln; end.
9.08.
calendar,
.
1 ()
.
-,
, 7 (
) 6 . 1-
, 1- ,
30 31 .
42 .
-,
1-
week_day.
,
max_day .
42
.
.
9_08.bas
DECLARE SUB
calendar(Y%,M%)
DECLARE FUNCTION
JD!(Y%,M%,DT!)
DECLARE FUNCTION
WeekDay!(Y%,M%,D%)
DECLARE FUNCTION
MaxDay!(Y%,M%)
REM
DATA 31,28,31,30,31,30,31,31,30,31,30,31
DIM SHARED DAYS(1
TO 12)
FOR j=l TO 12:
READ DAYS(j): NEXT j
CLS
INPUT "
: ",Y%
INPUT "
: ",M4
calendar Y%,M%
END
SUB calendar(Y%,M%)
DIM i AS INTEGER,
j AS INTEGER, k AS INTEGER, q AS INTEGER
DIM a(42),b$<7)
b$(0}="":
b$(1)=" ": b$(2)="
b$(3)="
": b$(4)=" ": b$(5)="
b$(6)=""
CLS
PRINT "
";%;" ";Y%;" "
i=WeekDay(Y%,M%,l)
IFi=0 THEN i=7
q-MaxDay(Y%,M%)
FOR j=0 TO 41:
a(j)=0: NEXT j
k=l
FOR j=i-l TO
q+i-2: a(j)=k: k=k+l: NEXT j
FOR j=0 TO 6
LOCATE j+3,10:
PRINT b$(j);
k=0
WHILE k<=35
IF a(k+j)<>0
THEN
PRINT USING
"####";a(k+j); ELSE PRINT " ";
END IF k=k+7
WEND NEXT j
END SUB
FUNCTION JD(Y%,M%,DT)
DIM a AS INTEGER,
b AS INTEGER, mm AS INTEGER, yy AS INTEGER
DIM AS LONG
b=0
yy=Y%
mm=M%
IF M%<3 THEN
yy=yy-l: mm=mm+12
a=yy\100
IF Y%+M%/100!+DT/10000>1582.1015#
THEN b=b+2-a+a\4
END IF
c=INT(365.25*yy)
IF yy<0 THEN c=INT(365.25*yy-.75)
JD=c+INT(30.6001*(mm+1))+DT+1720994.5#+b
END FUNCTION
FUNCTION MaxDay(Y%,M%)
MaxDay=DAYS(M%)
IF M%<>2
THEN EXIT FUNCTION
IF (Y% MOD 400=0)OR((Y%
MOD 4=0)AND(Y% MOD l00<>0) ) THEN MaxDay=29
END IF END FUNCTION
FUNCTION WeekDay(Y%,M%,D%)
dl!=D%+1.5
WeekDay=INT(JD(Y%,M%,dl!))
MOD 7 END FUNCTION
9_08.
#include <stdio.h>
#include <conio.h>
void calendar(int Y,int M);
int week_day(int Y,int M,int D) ;
double JD(int Y,int M,double DT);
int max_day(int
Y,int M);
main() {
int Y,M;
clrscr();
printf("
: ");
scanf("%d",&Y);
printf("
: ");
scanf("%d",&M);
calendar(Y,M);
getch(};
}
/*-------------------------------------------*/
void calendar'(int
Y, int M) {
int a[42],i,
j,k,q;
char *b[7]={"",
"
",
"
",
"
",
"
",
"
",
""};
clrscr();
printf("\t Id %d ",,);
i=week_day(Y,M,1); /* 1.M.Y */
if(i==0)i=7;
q=max day(Y,M);
/* */
for(j=0; j<42; j++) a[j]=0;
for(j=i-l,k=l;
j<q+i-l; j++,k++) a[j]=k;
for(j=0; j<7;
j++) {
gotoxy{10,j+3);
printf("%s",b[j]);
for(k=0; k<=35;
k+=7)
if(a[k+j] !=
0) printf("%4d",a[k+j]);
else printf("%4c",' '); }
return;
}
/*----------------------------------------*/
double JD(int Y,int M,double DT)
int a,b=0,m,y;
long c;
y=Y;
m=M;
if (M<3)
{ y--; m += 12; }
a = y/100;
if(Y+M/100.+DT/10000
> 1582.1015} b += 2-a+(int)(a/4.);
c=365.25*y;
if(y<0)c=365.25*y-0.75;
return c+(long)(30.6001*(m+1))+DT+1720994.5+b;
}
/*---------------------------------*/
int week_day(int
Y,int M,int D)
{
int q,m;
q = M+10;
m = (M-14)/12
+ Y;
return
((13*(q-(q/13)*12)-1)/5+D+77+5*
(m%100)/4+m/400-(m/100)*2)%7;
}
/*-----------------------------------*/
int max_day(int
Y,int M)
{ int days[]={31,28,31,30,31,31,30,31,30,31,30,31};
if(M != 2) return
days[M-l];
begin
max_day:=days[M];
if (M=2)and((Y
mod 400=0) or ( (Y mod 4=0) and (Y mod 100<>0) ) ) then
max_day:=2 9;
end;
procedure calendar(Y,M:integer);
var
i,j,k,q:integer; a:array [0..41] of byte;
const
b:array [0..6]
of string=('',
' ',
' ',
' ',
' ',
' ', ' '};
begin clrscr;
write('
',, ' ',Y, ' ');
i:=week_day(Y,M,1);
if 1=0 then i:=7;
q:=max_day(Y,M);
for j:=0 to 41 do
a[j]:=0; k:=l;
for j:=i-l to q+i-2 do begin
a[j]:=k;
inc(k);
end;
for j:=0 to 6
do begin
gotoxy(10, j+3) ;
write(b[j]);
k:=0;
while k<=
35 do begin;
if a[k+j] 0 then
write(a[k+j]:4)
else write(' ':4); k:=k+7;
end;
end;
end;
begin {main}
clrscr;
write('
: ');
readln(Y);
write('
: ');
readln(M);
calendar(Y,M);
readln; end.
9.09.
.
(H , M -, S ),
, t (0<= t <= 1).
9_09.bas
DECLARE SUB
UnpackTime(T!,H%,M%,S%)
DECLARE FUNCTION
PackTime!(H%,M%,S%)
CLS
%=18: %=0:
S%=0
T=PackTime(H%,%,S%)
PRINT USING
"##:##:## = ###.##";H%;M%;S%;T
T= 5
UnpackTime T,H%,M%,S%
PRINT USING
"##:##:## = ###.##";H%;M%;S%;T
END
FUNCTION PackTime(H%,M%,S%)
'
- (%)
' (%)
(S%)
PackTime = (% * 3600! + % * 60 + S%) / 86400!
END FUNCTION
SUB UnpackTime(,H%,M%,S%)
'
-
' (%),
(%) (S%)
t1!=T*86400 H%=INT(tl1/3600! )
t1!=t1!-3600!*H% M%=INT(t1!/60!)
S%=INT(t1!-60!*M%)
END SOB
9_09.c
#include <stdio.h>
#include <conio.h>
double pack_time(int
H, int M,int S) ;
void unpack_time(double
t,int *H,int *M,int *S);
main() {
int H=18,M=0,S=0;
double T;
clrscr();
T=pack_time(H,M,S);
printf("\n%2d:%2d:%2d=%f",H,M,S,T);
T=0.75;
unpack_time(T,&H,
&M,&S);
printf("\n%2d:%2d:%2d=%f",H,M,S,T);
getch();
}
/*----------------------------------------*/
double pack_time(int H,int M,int S)
/****************************************/
/* - () .*/
/* () (S) */
/****************************************/
{
return (H*3600.0+M*60+S)/86400.0;
}
/*--------------------------------------*/
void unpack_time(double
t,int *H,int *M,int *S)
/* - */
/* (),
() (S) */
{
double tl;
t1=t*86400;
*H=t1/3600.0;
t1=t1-3600.0*(*H);
*M=t1/60.0;
*S=t1-60.0*(*M);
}
9_09.pas
program pack_unpack;
uses Crt;
var
H,M,S:integer;
:double;
function pack_time(H,M,S:integer):double;
{
- ()
() (S) } begin
pack_time:=(H*3600.0+M*60+S)/86400.0;
end;
procedure unpack_time(t:double;var H,M,S:integer);
{
-
(),
() (S) }
var
t1:double; begin
t1:=t*86400;
H:=trunc(t1/3600.0)
;
t1:=t1-3600.0*H;
M:=trunc(t1/60.0);
S:=trunc(t1-60.0*M);
end;
begin {main}
clrscr;
H:=18; M:=0;
S:=0;
T:=pack_tiine(H,M,S)
;
writeln(H:2,':
',M:2, ': ',S:2, ' =',T:6:2);
T:=0.5;
unpack_time(T,H,M,S);
writeln(H:2,
': ',M:2, ': ',S:2, ' =',T:6:2);
readln;
end.
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