
Fortran Program samp1.f
Highlighted lines are those that are date sensitive.
C** Program samp1.f
C
C Samp1.f reads in 4 lines of data consisting of:
C
C Name1
C Birthdate1
C Name2
C Birthdate2
C
C
C where all entries are character strings and the birth dates are in
C date format: MMDDYY.
C
C Note that while it would be more efficient for the format of the
C input data to be in ISO (International Standards Organization) date
C format, YYMMDD, the format used provides a more useful program for
C illustrating problems associated with y2k remediation.
C
C Example:
C
C John Smith
C 991201
C Joe Public
C 981131
C
C The program compares the dates and computes which individual is
C older and prints the result with birth dates expressed in the
C format MM/DD/YY.
C
C**
character*6 date1,date2,date1p,date2p
character *20 name1,name2
character*3 month(12)
integer m1,m2,d1,d2,y1,y2
data month/'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
1 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'/
read(*,'(a)')name1
read (*,'(a)')date1
read(*,'(a)')name2
read (*,'(a)')date2
read(date1,'(3i2)')m1,d1,y1
read(date2,'(3i2)')m2,d2,y2
date1p = date1(5:6)//date1(1:2)//date1(3:4)
date2p = date2(5:6)//date2(1:2)//date2(3:4)
if(date1p.eq.date2p)then
print *, name1,' with birth date: ', month(m1),' ',d1,', ',
1 1900+y1
print *
print *, 'is the same age as'
print *
print *, name2,' with birth date: ', month(m2),' ',d2,', ',
1 1900+y2
else if(date1p.lt.date2p)then
print *, name1,' with birth date: ', month(m1),' ',d1,', ',
1 1900+y1
print *
print *, 'is older than'
print *
print *, name2,' with birth date: ', month(m2),' ',d2,', ',
1 1900+y2
else
print *, name1,' with birth date: ', month(m1),' ',d1,', ',
1 1900+y1
print *
print *, 'is younger than'
print *
print *, name2,' with birth date: ', month(m2),' ',d2,', ',
1 1900+y2
endif
end