diff --git a/ChangeLog b/ChangeLog
index 06e2400..cd4f492 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2025-03-07  Mert Gör  <mertgor@masscollabs.xyz>
 
+	* c-basic/CSD-C-Basic-Book/C.pdf: Sayıların printf Fonksiyonuyla Formatlanması sayfa 78
+	
 	* c-basic/CSD-C-Basic-Book/C.pdf: Fonksiyonların Geri Dönüş Değerleri (return value) sayfa 22 
 
 2025-02-04  Mert Gör  <mertgor@masscollabs.xyz>
diff --git a/c-basic/do_while_example_01.c b/c-basic/do_while_example_01.c
new file mode 100644
index 0000000..77f177f
--- /dev/null
+++ b/c-basic/do_while_example_01.c
@@ -0,0 +1,27 @@
+#include <stdio.h>
+#include <ncurses.h>
+
+int main(void)
+{
+
+  char ch;
+
+  do
+{
+
+  printf("(e)vet/(h)ayir?");
+
+  ch = getch();
+  printf("%c\n", ch);
+} while (ch != 'e' && ch != 'h');
+
+  if (ch == 'e')
+
+    printf("evet secildi\n");
+
+  else
+
+    printf("hayir secildi\n");
+
+  return 0;
+}
diff --git a/c-basic/for_example_01.c b/c-basic/for_example_01.c
new file mode 100644
index 0000000..e190604
--- /dev/null
+++ b/c-basic/for_example_01.c
@@ -0,0 +1,11 @@
+#include <stdio.h>
+
+int main(void){
+  int i;
+
+  for (i = 0; i < 10; ++i)
+    printf("%d\n", i);
+
+  return 0;
+  
+}
diff --git a/c-basic/putchar.c b/c-basic/putchar.c
new file mode 100644
index 0000000..82e8722
--- /dev/null
+++ b/c-basic/putchar.c
@@ -0,0 +1,12 @@
+#include <stdio.h>
+#include <ncurses.h>
+
+int main()
+{
+  char ch;
+
+  while ((ch = getch()) != 'q')
+    putchar(ch);
+
+  return 0;
+}
diff --git a/c-basic/while_example_01.c b/c-basic/while_example_01.c
new file mode 100644
index 0000000..c85a2ee
--- /dev/null
+++ b/c-basic/while_example_01.c
@@ -0,0 +1,12 @@
+#include <stdio.h>
+
+int main()
+{
+  int i = 0;
+
+  while (i < 10) {
+    printf("%d\n", i);
+    ++i;
+  }
+  return 0;
+}
diff --git a/c-basic/while_example_02.c b/c-basic/while_example_02.c
new file mode 100644
index 0000000..cd8ec74
--- /dev/null
+++ b/c-basic/while_example_02.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+
+int main(void)
+{
+  int i = 10;
+
+  while (i) {
+    printf("%d\n", i);
+    --i;
+  }
+
+  return 0;
+}