1 files changed, 58 insertions, 0 deletions
diff --git a/usr.bin/learn/lib/C/L5.2e b/usr.bin/learn/lib/C/L5.2e
new file mode 100644
index 00000000000..987a3cdb127
--- /dev/null
+++ b/usr.bin/learn/lib/C/L5.2e
@@ -0,0 +1,58 @@
+#print
+(Section 1.5)
+Write a program which copies its input to its output
+doubling each character (i.e. each input character
+is written twice on the output).  Compile and test
+it.  Then type ready.  Don't forget
+
+ #include <stdio.h>
+
+at the beginning of your program, and
+
+cc x.c -lS
+
+to compile it.
+#once #create Ref
+hoboken harrison newark roseville avenue grove street
+east orange brick church orange highland avenue
+mountain station south orange maplewood millburn short hills
+summit chatham madison convent station morristown
+new providence murray hill berkeley heights
+gillette stirling millington lyons basking ridge
+bernardsville far hills peapack gladstone
+#once #create Answer
+hhoobbookkeenn  hhaarrrriissoonn  nneewwaarrkk  rroosseevviillllee  aavveennuuee  ggrroovvee  ssttrreeeett
+
+eeaasstt  oorraannggee  bbrriicckk  cchhuurrcchh  oorraannggee  hhiigghhllaanndd  aavveennuuee
+
+mmoouunnttaaiinn  ssttaattiioonn  ssoouutthh  oorraannggee  mmaapplleewwoooodd  mmiillllbbuurrnn  sshhoorrtt  hhiillllss
+
+ssuummmmiitt  cchhaatthhaamm  mmaaddiissoonn  ccoonnvveenntt  ssttaattiioonn  mmoorrrriissttoowwnn
+
+nneeww  pprroovviiddeennccee  mmuurrrraayy  hhiillll  bbeerrkkeelleeyy  hheeiigghhttss
+
+ggiilllleettttee  ssttiirrlliinngg  mmiilllliinnggttoonn  llyyoonnss  bbaasskkiinngg  rriiddggee
+
+bbeerrnnaarrddssvviillllee  ffaarr  hhiillllss  ppeeaappaacckk  ggllaaddssttoonnee
+
+#user
+a.out <Ref >xxx
+#cmp Answer xxx
+#succeed
+/*	One way: */
+
+ #include <stdio.h>
+
+main()
+{
+	int c;
+
+	while ((c = getchar()) != EOF) {
+		putchar(c);
+		putchar(c);
+	}
+}
+#log
+#next
+5.1e 5
+5.3e 2