diff --git a/.kdev4/LearningC.kdev4 b/.kdev4/LearningC.kdev4
index 2ffd5cd..d3e17e6 100644
--- a/.kdev4/LearningC.kdev4
+++ b/.kdev4/LearningC.kdev4
@@ -1,2 +1,19 @@
+[Buildset]
+BuildItems=@Variant(\x00\x00\x00\t\x00\x00\x00\x00\x01\x00\x00\x00\x0b\x00\x00\x00\x00\x01\x00\x00\x00\x12\x00L\x00e\x00a\x00r\x00n\x00i\x00n\x00g\x00C)
+
+[CMake]
+Build Directory Count=1
+Current Build Directory Index-Host System=0
+
+[CMake][CMake Build Directory 0]
+Build Directory Path=/home/caskd/Projects/LearningC/build
+Build Type=Debug
+CMake Binary=/usr/bin/cmake
+CMake Executable=/usr/bin/cmake
+Environment Profile=
+Extra Arguments=
+Install Directory=
+Runtime=Host System
+
 [Project]
 VersionControlSupport=kdevgit
diff --git a/main b/main
new file mode 100755
index 0000000..48241d1
Binary files /dev/null and b/main differ
diff --git a/main.c b/main.c
index cdcf638..e269483 100644
--- a/main.c
+++ b/main.c
@@ -8,6 +8,11 @@
 // // PART OF 1-15
 // float convert2cels(int fahr);
 
+// // PART OF 1-16, 1-17
+// #define MAXLINE 1000
+// int getlines(char line[], int maxline);
+// void copy(char to[], char from[]);
+
 int main() {
 // //   1-1
 //   printf("Hello, World!\n");
@@ -148,10 +153,69 @@ int main() {
 //     celsius = celsius + STEP;
 //   }
 
-  return 0;
-}
+// // 1-16
+//   int len;
+//   /* current line length */
+//   int max;
+//   /* maximum length seen so far */
+//   char line[MAXLINE];
+//   /* current input line */
+//   char longest[MAXLINE];
+//   /* longest line saved here */
+//   max = 0;
+//   while ((len = getlines(line, MAXLINE)) > 0)
+//     if (len > max) {
+//       max = len;
+//       copy(longest, line);
+//     }
+//   if (max > 0) /* there was a line */
+//     printf("Character count: %d\n%s", max, longest);
+
+// // 1-17
+//   char line[MAXLINE];
+//   int len;
+//   while ((len = getlines(line,MAXLINE)) > 0) {
+//     if (len > 80)
+//       printf("%s", line);
+//   }
+
+// // 1-18
+//   char line[MAXLINE], prostr[MAXLINE];
+//   int len;
+//   int skip = 0;
+//   while ((len = getlines(line, MAXLINE)) > 0) {
+//     for (int i=len; !(i < 0); --i) {
+//       if (skip != 0 || !(line[i] == ' ' || line[i] == '\n' || line[i] == '\t' || line[i] == '\0')) {
+//         prostr[i] = line[i];
+//         skip = 1;
+//       }
+//     }
+//   }
+//   printf("\"%s\"\n", prostr);
+//   return 0;
+// }
 
 // // PART OF 1-15
 // float convert2cels(int fahr) {
 //   return (5.0/9.0) * (fahr-32.0);
 // }
+
+// // PART OF 1-16, 1-17, 1-18
+// int getlines(char s[],int lim) {
+//   int c, i;
+//   for (i=0; i < lim-1 && (c=getchar())!=EOF && c!='\n'; ++i)
+//     s[i] = c;
+//   if (c == '\n') {
+//     s[i] = c;
+//     ++i;
+//   }
+//   s[i] = '\0';
+//   return i;
+// }
+// /* copy: copy 'from' into 'to'; assume to is big enough */
+// void copy(char to[], char from[]) {
+//   int i;
+//   i = 0;
+//   while ((to[i] = from[i]) != '\0')
+//   ++i;
+// }