diff --git a/C/Colleen/Colleen.c b/C/Colleen/Colleen.c
new file mode 100644
index 0000000..f9849c3
--- /dev/null
+++ b/C/Colleen/Colleen.c
@@ -0,0 +1,14 @@
+#include <stdio.h>
+
+/**
+ * @brief Return the all program in a string using placeholder
+ *
+ * @return all the program even this comment
+ */
+const char *get_program(void) {
+    return "#include <stdio.h>%1$c%1$c/**%1$c * @brief Return the all program in a string using placeholder%1$c *%1$c * @return all the program even this comment%1$c */%1$cconst char *get_program(void) {%1$c%2$creturn %3$c%4$s%3$c;%1$c}%1$c%1$cint main(void) {%1$c%2$cprintf(get_program(), 10, 9, 34, get_program());%1$c%2$creturn 0;%1$c}%1$c";
+}
+
+int main(void) {
+	printf(get_program(), 10, 9, 34, get_program());
+}