import BTL learn(1) lessons/C

1 files changed, 31 insertions, 0 deletions

diff --git a/usr.bin/learn/lib/C/L5.1c b/usr.bin/learn/lib/C/L5.1c
new file mode 100644
index 00000000000..44c3f59060c
--- /dev/null
+++ b/usr.bin/learn/lib/C/L5.1c
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+#print
+(Section 1.5)
+Write a program which reads one character from
+its input; if that character is ? it prints "yes",
+otherwise it prints "no".
+Compile it, test it, and then type ready.
+#once #create Ref1
+? is here
+#once #create Ref2
+no ? at beginning
+#user
+a.out <Ref1 >test1
+a.out <Ref2 >test2
+grep yes test1 >/dev/null && grep no test2 >/dev/null
+#succeed
+This is one possible solution
+
+main()
+{
+	if (getchar() == '?')
+		printf("yes\n");
+	else
+		printf("no\n");
+}
+
+The indenting and general formatting of C programs
+should be done so you make the structure clear,
+like the code above.
+#log
+#next
+5.1d 10