RosettaCodeData/Task/Nth/ALGOL-W/nth.alg
2023-07-01 13:44:08 -04:00

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begin % suffix number with st, nd, rd or th as appropriate %
string(2) procedure ordinalSuffix ( integer value number ) ;
begin
integer numberRem100;
numberRem100 := number rem 100;
if numberRem100 >= 10 and numberRem100 <= 20 then begin
% numbers in the range 10 .. 20 always have "th" %
"th"
end
else begin
% not in the range 10 .. 20, suffix is st, nd, rd or th %
% depending on the final digit %
integer numberRem10;
numberRem10 := number rem 10;
if numberRem10 = 1 then "st"
else if numberRem10 = 2 then "nd"
else if numberRem10 = 3 then "rd"
else "th"
end if_numberRem100_in_10_to_20__
end ordinalSuffix ;
% tests ordinalSuffix, displays the suffix for all numbers in from .. to %
procedure testSuffix ( integer value from, to ) ;
begin
integer count;
count := 0;
for testValue := from until to do begin
writeon( i_w := 4, s_w := 0, " ", testValue, ordinalSuffix( testValue ) );
count := count + 1;
if count rem 8 = 0 then write()
end for_testValue ;
if count rem 8 not = 0 then write();
write()
end testSuffix ;
begin % task %
testSuffix( 0, 25 );
testSuffix( 250, 265 );
testSuffix( 1000, 1025 )
end
end.