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Task/Nth/PL-I/nth.pli

@@ -0,0 +1,26 @@
+Nth: procedure options (main);   /* 1 June 2014 */
+   declare i fixed (10);
+
+   do i = 0 to 25, 250 to 265, 1000 to 1025;
+      if i = 250 | i = 1000 then put skip (2);
+      put edit (enth(i)) (x(1), a);
+   end;
+
+enth: procedure (i) returns (character (25) varying);
+   declare i fixed (10);
+   declare suffix character (2);
+
+   select (mod(i, 10));
+      when (1)  suffix = 'st';
+      when (2)  suffix = 'nd';
+      when (3)  suffix = 'rd';
+      otherwise suffix = 'th';
+   end;
+   select (mod(i, 100));
+      when (11, 12, 13) suffix = 'th';
+      otherwise ;
+   end;
+   return ( trim(i) || suffix );
+end enth;
+
+end Nth;