diff --git a/Codes/doctorAppointment.cpp b/Codes/doctorAppointment.cpp
new file mode 100644
index 0000000..8007351
--- /dev/null
+++ b/Codes/doctorAppointment.cpp
@@ -0,0 +1,237 @@
+#include <iostream>
+#include <string>
+#include <fstream>
+#include <cstring>
+
+using namespace std;
+
+int bookAppointment()
+{
+    system("cls");
+	
+    cout<<"\n ----- Book Your Appointment ---- \n";	
+    cout<<"\n ----- Availbale slots ---- \n";	 
+
+    //check if record already exist..
+    ifstream read;
+    read.open("appointment.dat");
+    
+    int hoursbook = 8;
+    
+    int arr[13] = {0,0,0,0,0,0,0,0,0,0,0,0,0};
+    int recordFound =0; 
+     
+    if(read)
+    {     
+	string line;
+	char key = 'A';
+	int i = 9;
+	       
+	while(getline(read, line)) {
+	char temp = line[0];
+	int index = (temp - 65);
+	arr[index]=1;  
+	recordFound = 1;
+	}
+	if(recordFound == 1)
+	{
+	cout<<"\n Appointment Summary by hours:";
+	char key = 'A';
+	int hours = 9;
+	for(int i = 0; i<=12; i++)
+	{
+	if(i == 0){
+	if(arr[i] == 0) 
+	cout<<"\n "<<key<<"-> 0"<<hours<<" - Available";
+	else
+	cout<<"\n "<<key<<"-> 0"<<hours<<" - Booked";
+	}
+	
+	else
+	{								           	
+	if(arr[i] == 0) 
+	cout<<"\n "<<key<<"->"<<hours<<" - Available";
+	else
+	cout<<"\n "<<key<<"->"<<hours<<" - Booked";
+	}
+	hours++; key++;
+	}
+            
+	}
+		
+	read.close();
+    }
+	if(recordFound == 0){
+	cout<<"\n Appointment Available for following hours :";
+	char key = 'A';
+	for(int i = 9; i<=21; i++)
+	{
+		if(i==9)
+		cout<<"\n "<<key<<" -> 0"<<i<<" - Available";
+		else
+		cout<<"\n "<<key<<" -> "<<i<<" - Available";
+		key++;
+	}
+		
+	}
+   
+   char choice;
+   cout<<"\n\n Input your choice : ";
+   cin>>choice;
+   
+   if( !(choice >= 'A' && choice <='Z'))
+   {
+	cout<"\n Error : Invalid Selection";
+	cout<<"\n Please selction correct value from menu A- Z";
+	cout<"\n Press any key to continue";
+	getchar();getchar();
+	system("cls");
+	bookAppointment();
+   }
+   
+   int index = (choice-65 );
+   int isBooked = 1;
+   if(arr[index] == 0) 
+      isBooked = 0;
+      
+   if(isBooked ==1)
+   {
+   	cout<<"\n Error : Appointment is already booked for this Hour";
+   	cout<<"\n Please select different time !!";
+   	cout<<"\n Press any key to continue!!";
+   	getchar();getchar();
+   	system("cls");
+   	bookAppointment();
+   }
+   
+   string name;
+   cout<<"\n Enter your first name:";
+   cin>>name;  
+   
+   ofstream out;
+   out.open("appointment.dat", ios::app);
+	
+   if(out){
+	   out<<choice<<":"<<name.c_str()<<"\n";
+	   out.close();
+	   cout<<"\n Appointment booked for Hours : "<< (choice-65) + 9 <<" successfully !!";
+    }
+    else
+    {
+    	cout<<"\n Error while saving booking";
+    }
+
+    cout<<"\n Please any key to continue..";
+	getchar(); getchar();
+	return 0;		
+}
+
+int existingAppointment()
+{
+    system("cls");
+    cout<<"\n ----- Appointments Summary ---- \n";	
+    //check if record already exist..
+    ifstream read;
+    read.open("appointment.dat");
+    
+    int hoursbook = 8;
+    
+    int arr[13] = {0,0,0,0,0,0,0,0,0,0,0,0,0};
+     int recordFound =0; 
+     
+    if(read)
+    {     
+	string line;
+	char key = 'A';
+	int i = 9;
+	       
+	   while(getline(read, line)) {
+	   	   char temp = line[0];
+	   	   int index = (temp - 65);
+	   	   arr[index]=1;  
+		   recordFound = 1;
+	  }
+        if(recordFound == 1)
+        {
+        cout<<"\n Appointment Summary by hours:";
+        char key = 'A';
+        int hours = 9;
+        for(int i = 0; i<=12; i++)
+        {
+        	if(arr[i] == 0) 
+        	cout<<"\n "<<key<<"->"<<hours<<" - Available";
+        	else
+        	cout<<"\n "<<key<<"->"<<hours<<" - Booked";
+        	hours++; key++;
+        }
+            
+	}
+		
+	read.close();
+    }
+    else
+    {
+    char key = 'A';
+	for(int i = 9; i<=21; i++)
+	{
+	if(i==9)
+	cout<<"\n "<<key<<" -> 0"<<i<<" - Available";
+	else
+	cout<<"\n "<<key<<" -> "<<i<<" - Available";
+	key++;
+	}
+    }
+    
+    cout<<"\n Please any key to continue..";
+    getchar(); getchar();
+    return 0;	 
+}
+
+ 
+
+int main(int argc, char** argv) {
+	while(1)
+	{
+		system("cls");
+		cout<<"\t\t\tDoctor Appointment System\n";
+		cout<<"----------------------------------------\n\n";
+		
+		cout<<"1. Book Appointment\n";
+		cout<<"2. Check Existing Appointment\n";
+		cout<<"0. Exit\n";
+		int choice;
+		
+		cout<<"\n Enter you choice: ";
+		cin>>choice;
+		
+		switch(choice)
+		{
+			case 1: bookAppointment(); break;
+			case 2: existingAppointment(); break;
+			case 0: 
+		        while(1)
+		        {
+				 system("cls");
+		        	cout<<"\n Are you sure, you want to exit? y | n \n";
+		        	char ex;
+		        	cin>>ex;
+		        	if(ex == 'y' || ex == 'Y')
+		        		exit(0);
+		        	else if(ex == 'n' || ex == 'N')
+                     		{
+                     		 break;
+                    		}
+                     else{
+                     	cout<<"\n Invalid choice !!!";
+                     	getchar();
+                     }
+             	 }	break;
+                 	 
+            default: cout<<"\n Invalid choice. Enter again ";
+                     getchar();
+                 	
+		}   		        
+
+	}
+	return 0;
+}
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