diff --git a/src/main/kotlin/College.kt b/src/main/kotlin/College.kt
new file mode 100644
index 0000000..d08b7ff
--- /dev/null
+++ b/src/main/kotlin/College.kt
@@ -0,0 +1,14 @@
+public class college {
+
+    fun fullName(firstName:String,lastName:String ) = "$firstName $lastName"
+    fun course (  ): List<String>  {
+        val listOFCourses = mutableListOf<String>("ComputerScience")
+        listOFCourses.addAll(listOf<String>("dataBases","softwareEngineering","Networks"))
+        return listOFCourses
+    }
+         var courseName = ""
+
+}
+         fun main() {
+             println(course())
+}
\ No newline at end of file
diff --git a/src/main/kotlin/Course.kt b/src/main/kotlin/Course.kt
new file mode 100644
index 0000000..5a680c8
--- /dev/null
+++ b/src/main/kotlin/Course.kt
@@ -0,0 +1,41 @@
+import professor
+class Course {
+
+    var coursesNames= college().course()
+    var numberofLectures = professor().professorName.size
+    var numberOfStudents = 2
+}
+fun main() {
+    var coursesNames= college().course()
+    var numberofLectures = professor().professorName.size
+    var numberOfStudents = 2
+    println(profLecture())
+    professor().coursesAndProf
+    profLecture() // professors to lecs boolean
+    profStudents() // students to lec boolean
+    courseInfo()
+}
+
+fun profLecture ():String {
+    var try1 = professor().professorNamFull("Hatem","Azhary").toString()
+    var try2 = professor().coursesAndProf.keys.toString()
+    return if( try1 == try2){
+        "go to our lectures"
+    }else " check our class"
+
+}
+
+fun profStudents ():String{
+    var try1 = Students().student1.toString()
+    var try2= Students().coursesAndStudent.keys.toString()
+    return if (try1 == try2 ){
+        "go to class kids"
+    }else " check our class"
+}
+fun courseInfo (){
+    var numOfLectures=  Course().numberofLectures
+    var numOfStudents= Students().student1.size
+    var numOfProfessors = professor().professorName.size
+    var coursesNames= college().course()
+    println("lecs num:$numOfLectures, Students num: $numOfStudents, Profs nun: $numOfProfessors, name of courses: $coursesNames  ")
+}
\ No newline at end of file
diff --git a/src/main/kotlin/Main.kt b/src/main/kotlin/Main.kt
index 2581cde..6543c07 100644
--- a/src/main/kotlin/Main.kt
+++ b/src/main/kotlin/Main.kt
@@ -1,6 +1,12 @@
 fun main(args: Array<String>) {
+    fun commonAtributes(){
+        var firstName = ""
+        var lastName = ""
+        fun fullName() = "$firstName $lastName"
+        var courseName = ""}
 
-    // write your code here
+}
 
+   class course(){
 
 }
\ No newline at end of file
diff --git a/src/main/kotlin/Professor.kt b/src/main/kotlin/Professor.kt
new file mode 100644
index 0000000..f09d909
--- /dev/null
+++ b/src/main/kotlin/Professor.kt
@@ -0,0 +1,36 @@
+import college
+import Students
+class professor {
+
+    var professorName= professorNam("Hatem","Azhary")
+
+    var courses = college().course()
+    var coursesN= college().course()
+
+    var coursesAndProf = mutableMapOf(professorName[0]to courses[0], professorName[1] to courses[1], professorName[2] to courses[2], professorName[3] to courses[3] )
+
+    var phoneNumber = " 0530xxxxxxxx"
+    fun professorNamFull(firstName:String,lastName:String){
+        var  professorFullName = "$firstName $lastName"}
+}
+
+fun main() {
+
+    var professorName= professorNam("Hatem","Azhary")
+    var courses = college().course()
+
+
+    var coursesAndProf = mutableMapOf(professorName[0]to courses[0], professorName[1] to courses[1], professorName[2] to courses[2], professorName[3] to courses[3] )
+
+    println(coursesAndProf)
+    var phoneNumber = " 0530xxxxxxxx"
+}
+
+
+fun professorNam(firstName:String,lastName:String):List<String>{
+    var  professorFullName = "$firstName $lastName"
+    var professors = mutableListOf("$professorFullName","$lastName $firstName", "$firstName $firstName", "$lastName $lastName")
+    return professors
+}
+fun professorNamFull(firstName:String,lastName:String){
+    var  professorFullName = "$firstName $lastName"}
\ No newline at end of file
diff --git a/src/main/kotlin/Students.kt b/src/main/kotlin/Students.kt
new file mode 100644
index 0000000..9e62cf8
--- /dev/null
+++ b/src/main/kotlin/Students.kt
@@ -0,0 +1,45 @@
+import college
+
+fun main() {
+
+    var firstName = "Amaar"
+    var lastName = "Shaher"
+    var  student1 =  studentNam(firstName,lastName)
+    var student2 = studentNam("yosef","zyad")
+    listOf<String>("dataBases","softwareEngineering","Networks")
+    var courses = college().course()
+    var coursesAndStudent = mutableMapOf(student1[0]to courses[0], student1[1] to courses[1], student1[2] to courses[2], student1[3] to courses[3] )
+
+    println(studentCourses())
+
+}
+public class Students {
+
+    var firstName = "Amaar"
+    var lastName = "Shaher"
+    var  student1 =  studentNam(firstName,lastName)
+    var student2 = studentNam("yosef","zyad")
+    var courses = college().course()
+    var coursesAndStudent = mutableMapOf(student1[0]to courses[0], student1[1] to courses[1], student1[2] to courses[2], student1[3] to courses[3] )
+
+    fun studentName (firstName: String, lastName: String, ){
+
+        college().fullName(firstName,lastName)
+        return
+    }
+}
+
+fun studentName (firstName:String, lastName:String, ){
+
+    college().fullName(firstName,lastName)
+    return
+}
+
+fun studentCourses (): List <String> {
+
+    return college().course()
+}
+fun studentNam(firstName:String,lastName:String):List<String>{
+    var  studentFullName = "$firstName $lastName"
+    var students0 = mutableListOf("$studentFullName","$lastName $firstName", "$firstName $firstName", "$lastName $lastName")
+    return students0 }
\ No newline at end of file