diff --git a/.DS_Store b/.DS_Store
index 40d0ffe..39cd571 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/11/.DS_Store b/11/.DS_Store
index d1c60f5..a94b464 100644
Binary files a/11/.DS_Store and b/11/.DS_Store differ
diff --git a/11/11/11.30.c b/11/11/11.30.c
index 5af71e4..6537acf 100644
--- a/11/11/11.30.c
+++ b/11/11/11.30.c
@@ -1,7 +1,6 @@
 #include "s_gets.h"
 #define SIZE 81
 #define LIM 20
-#define HALT ""
 
 void stsrt (char *strings[], int num)
 {
@@ -25,7 +24,7 @@ void stsrt (char *strings[], int num)
 int main (void)
 {
     char input[LIM][SIZE];
-    char *ptstr[LIM];
+    char * ptstr[LIM];
     int ct = 0;
     int k;
 
@@ -37,7 +36,7 @@ int main (void)
         ct ++;
     }
     stsrt (ptstr, ct);
-    puts ("\nHere's the sort list: \n");
+    puts ("Here's the sort list: \n");
     for (k = 0; k < ct; k ++)
     {
         puts (ptstr[k]);
diff --git a/11/11/11.31.c b/11/11/11.31.c
new file mode 100644
index 0000000..b82ced7
--- /dev/null
+++ b/11/11/11.31.c
@@ -0,0 +1,50 @@
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#define LIMIT 81
+void to_upper (char * str);
+int punct_count (const char *str);
+
+int main (void)
+{
+    char line[LIMIT];
+    char * find;
+
+    puts ("please enter a line: ");
+    fgets (line, LIMIT, stdin);
+    find = strchr (line, '\n');
+    if (find)
+    {
+        *find = '\0';
+    }
+    to_upper (line);
+    puts (line);
+    printf ("That line has %d punctuation characters. \n", punct_count (line));
+
+    return 0;
+}
+void to_upper (char * str)
+{
+    while (*str)
+    {
+        if (islower (*str))
+        {
+            *str = toupper (*str);
+        }
+        str ++;
+    }
+}
+int punct_count (const char * str)
+{
+    int ct;
+
+    for (ct = 0; *str; str ++)
+    {
+        if (ispunct (*str))
+        {
+            ct ++;
+        }
+    }
+
+    return ct;
+}
\ No newline at end of file
diff --git a/11/11/11.32.c b/11/11/11.32.c
new file mode 100644
index 0000000..68f414e
--- /dev/null
+++ b/11/11/11.32.c
@@ -0,0 +1,14 @@
+#include <stdio.h>
+int main (int argc, char * argv[])
+{
+    int count;
+
+    printf ("The command line has %d arguments: \n", argc - 1);
+    for (count = 0; count < argc; count ++)
+    {
+        printf ("%d: %s\n", count, argv[count]);
+    }
+    printf ("\n");
+
+    return 0;
+}
\ No newline at end of file
diff --git a/11/11/11.33.c b/11/11/11.33.c
new file mode 100644
index 0000000..bb9e986
--- /dev/null
+++ b/11/11/11.33.c
@@ -0,0 +1,19 @@
+#include <stdio.h>
+#include <stdlib.h>
+int main (int argc, char * argv[])
+{
+    int i, times;
+
+    if (argc < 2 || (times = atoi (argv[1])) < 1)
+    {
+        printf ("Usage: %s positive-number\n", argv[0]);
+    }else
+    {
+        for (i = 0; i < times; i ++)
+        {
+            puts ("Hello, goodlooking!");
+        }
+    }
+
+    return 0;
+}
\ No newline at end of file
diff --git a/11/11/11.34.c b/11/11/11.34.c
new file mode 100644
index 0000000..89e863c
--- /dev/null
+++ b/11/11/11.34.c
@@ -0,0 +1,22 @@
+#include "s_gets.h"
+#include <stdlib.h>
+#define LIM 30
+int main (void)
+{
+    char number[LIM];
+    char * end;
+    long value;
+
+    puts ("Enter a number(empty line to quit):");
+    while (s_gets (number, LIM) && number[0])
+    {
+        value = strtol (number, &end, 10);
+        printf ("base 10 input, base 10 output: %ld, stopped at %s(%d)\n", value, end, *end);
+        value = strtol (number, &end, 16);
+        printf ("base 16 input, base 10 output: %ld, stopped at %s(%d)\n", value, end, *end);
+        puts ("Next number:");
+    }
+    puts ("Bye.");
+
+    return 0;
+}
\ No newline at end of file
diff --git a/11/11/11.35.c b/11/11/11.35.c
new file mode 100644
index 0000000..e69de29
diff --git a/11/11/hello b/11/11/hello
new file mode 100755
index 0000000..3d8a948
Binary files /dev/null and b/11/11/hello differ
diff --git a/11/11/repeat b/11/11/repeat
new file mode 100755
index 0000000..5cdfdc5
Binary files /dev/null and b/11/11/repeat differ
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 848e52c..8ae19bf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,5 +6,5 @@ set(CMAKE_CXX_STANDARD 14)
 include_directories(9)
 
 add_executable(C_primer
-        11/11/11.30.c 11/11/s_gets.c
+        11/11/11.34.c 11/11/s_gets.c
 )
diff --git a/cmake-build-debug/.cmake/api/v1/reply/codemodel-v2-570e37c8900be2a43840.json b/cmake-build-debug/.cmake/api/v1/reply/codemodel-v2-bc71b87dc24d23e97fec.json
similarity index 93%
rename from cmake-build-debug/.cmake/api/v1/reply/codemodel-v2-570e37c8900be2a43840.json
rename to cmake-build-debug/.cmake/api/v1/reply/codemodel-v2-bc71b87dc24d23e97fec.json
index 7c78a92..dd446a4 100644
--- a/cmake-build-debug/.cmake/api/v1/reply/codemodel-v2-570e37c8900be2a43840.json
+++ b/cmake-build-debug/.cmake/api/v1/reply/codemodel-v2-bc71b87dc24d23e97fec.json
@@ -39,7 +39,7 @@
 				{
 					"directoryIndex" : 0,
 					"id" : "C_primer::@6890427a1f51a3e7e1df",
-					"jsonFile" : "target-C_primer-Debug-c6656e18f983ae479999.json",
+					"jsonFile" : "target-C_primer-Debug-2506983990cec0ab17b4.json",
 					"name" : "C_primer",
 					"projectIndex" : 0
 				}
diff --git a/cmake-build-debug/.cmake/api/v1/reply/index-2024-01-21T04-32-30-0706.json b/cmake-build-debug/.cmake/api/v1/reply/index-2024-01-25T03-56-12-0842.json
similarity index 93%
rename from cmake-build-debug/.cmake/api/v1/reply/index-2024-01-21T04-32-30-0706.json
rename to cmake-build-debug/.cmake/api/v1/reply/index-2024-01-25T03-56-12-0842.json
index 2f6d584..64934b4 100644
--- a/cmake-build-debug/.cmake/api/v1/reply/index-2024-01-21T04-32-30-0706.json
+++ b/cmake-build-debug/.cmake/api/v1/reply/index-2024-01-25T03-56-12-0842.json
@@ -26,7 +26,7 @@
 	"objects" : 
 	[
 		{
-			"jsonFile" : "codemodel-v2-570e37c8900be2a43840.json",
+			"jsonFile" : "codemodel-v2-bc71b87dc24d23e97fec.json",
 			"kind" : "codemodel",
 			"version" : 
 			{
@@ -86,7 +86,7 @@
 		},
 		"codemodel-v2" : 
 		{
-			"jsonFile" : "codemodel-v2-570e37c8900be2a43840.json",
+			"jsonFile" : "codemodel-v2-bc71b87dc24d23e97fec.json",
 			"kind" : "codemodel",
 			"version" : 
 			{
diff --git a/cmake-build-debug/.cmake/api/v1/reply/target-C_primer-Debug-c6656e18f983ae479999.json b/cmake-build-debug/.cmake/api/v1/reply/target-C_primer-Debug-2506983990cec0ab17b4.json
similarity index 98%
rename from cmake-build-debug/.cmake/api/v1/reply/target-C_primer-Debug-c6656e18f983ae479999.json
rename to cmake-build-debug/.cmake/api/v1/reply/target-C_primer-Debug-2506983990cec0ab17b4.json
index 314b1b7..7f86817 100644
--- a/cmake-build-debug/.cmake/api/v1/reply/target-C_primer-Debug-c6656e18f983ae479999.json
+++ b/cmake-build-debug/.cmake/api/v1/reply/target-C_primer-Debug-2506983990cec0ab17b4.json
@@ -99,7 +99,7 @@
 		{
 			"backtrace" : 1,
 			"compileGroupIndex" : 0,
-			"path" : "11/11/11.30.c",
+			"path" : "11/11/11.34.c",
 			"sourceGroupIndex" : 0
 		},
 		{
diff --git a/cmake-build-debug/.ninja_deps b/cmake-build-debug/.ninja_deps
index 4a15b06..1a66ef7 100644
Binary files a/cmake-build-debug/.ninja_deps and b/cmake-build-debug/.ninja_deps differ
diff --git a/cmake-build-debug/.ninja_log b/cmake-build-debug/.ninja_log
index e237577..44ae381 100644
--- a/cmake-build-debug/.ninja_log
+++ b/cmake-build-debug/.ninja_log
@@ -1,35 +1,37 @@
 # ninja log v5
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new file mode 100644
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diff --git a/cmake-build-debug/CMakeFiles/C_primer.dir/11/11/11.34.c.o b/cmake-build-debug/CMakeFiles/C_primer.dir/11/11/11.34.c.o
new file mode 100644
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diff --git a/cmake-build-debug/CMakeFiles/clion-Debug-log.txt b/cmake-build-debug/CMakeFiles/clion-Debug-log.txt
index b058ea6..f3d6933 100644
--- a/cmake-build-debug/CMakeFiles/clion-Debug-log.txt
+++ b/cmake-build-debug/CMakeFiles/clion-Debug-log.txt
@@ -1,4 +1,4 @@
 /Applications/CLion.app/Contents/bin/cmake/mac/x64/bin/cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_MAKE_PROGRAM=/Applications/CLion.app/Contents/bin/ninja/mac/x64/ninja -G Ninja -S /Users/tgspock/Documents/GitHub/learn_c_primer.github.io -B /Users/tgspock/Documents/GitHub/learn_c_primer.github.io/cmake-build-debug
--- Configuring done (0.1s)
+-- Configuring done (0.2s)
 -- Generating done (0.0s)
 -- Build files have been written to: /Users/tgspock/Documents/GitHub/learn_c_primer.github.io/cmake-build-debug
diff --git a/cmake-build-debug/C_primer b/cmake-build-debug/C_primer
index cbdcd92..1401a57 100755
Binary files a/cmake-build-debug/C_primer and b/cmake-build-debug/C_primer differ
diff --git a/cmake-build-debug/Testing/Temporary/LastTest.log b/cmake-build-debug/Testing/Temporary/LastTest.log
index be0feaa..8537e3e 100644
--- a/cmake-build-debug/Testing/Temporary/LastTest.log
+++ b/cmake-build-debug/Testing/Temporary/LastTest.log
@@ -1,3 +1,3 @@
-Start testing: Jan 21 12:47 CST
+Start testing: Jan 25 14:45 CST
 ----------------------------------------------------------
-End testing: Jan 21 12:47 CST
+End testing: Jan 25 14:45 CST
diff --git a/cmake-build-debug/build.ninja b/cmake-build-debug/build.ninja
index 0dd730c..d84967d 100644
--- a/cmake-build-debug/build.ninja
+++ b/cmake-build-debug/build.ninja
@@ -49,8 +49,8 @@ cmake_ninja_workdir = /Users/tgspock/Documents/GitHub/learn_c_primer.github.io/c
 
 build cmake_object_order_depends_target_C_primer: phony || CMakeFiles/C_primer.dir
 
-build CMakeFiles/C_primer.dir/11/11/11.30.c.o: C_COMPILER__C_primer_unscanned_Debug /Users/tgspock/Documents/GitHub/learn_c_primer.github.io/11/11/11.30.c || cmake_object_order_depends_target_C_primer
-  DEP_FILE = CMakeFiles/C_primer.dir/11/11/11.30.c.o.d
+build CMakeFiles/C_primer.dir/11/11/11.34.c.o: C_COMPILER__C_primer_unscanned_Debug /Users/tgspock/Documents/GitHub/learn_c_primer.github.io/11/11/11.34.c || cmake_object_order_depends_target_C_primer
+  DEP_FILE = CMakeFiles/C_primer.dir/11/11/11.34.c.o.d
   FLAGS = -g -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.1.sdk -mmacosx-version-min=12.7 -fcolor-diagnostics
   INCLUDES = -I/Users/tgspock/Documents/GitHub/learn_c_primer.github.io/9
   OBJECT_DIR = CMakeFiles/C_primer.dir
@@ -71,7 +71,7 @@ build CMakeFiles/C_primer.dir/11/11/s_gets.c.o: C_COMPILER__C_primer_unscanned_D
 #############################################
 # Link the executable C_primer
 
-build C_primer: C_EXECUTABLE_LINKER__C_primer_Debug CMakeFiles/C_primer.dir/11/11/11.30.c.o CMakeFiles/C_primer.dir/11/11/s_gets.c.o
+build C_primer: C_EXECUTABLE_LINKER__C_primer_Debug CMakeFiles/C_primer.dir/11/11/11.34.c.o CMakeFiles/C_primer.dir/11/11/s_gets.c.o
   FLAGS = -g -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.1.sdk -mmacosx-version-min=12.7
   OBJECT_DIR = CMakeFiles/C_primer.dir
   POST_BUILD = :