Menebak zodiac berdasarkan tanggal lahir

Berikut adalah source code C dimana user tinggal memasukkan tanggal dan bulan kelahirannya dan hasil output nya adalah nama zodiacnya

berikut adalah source code nya

 #include<iostream>  
 using namespace std;  
 int main() {  
      int a = 0;  
      int date,month;  
      start:  
      cout << "\n\n\n\t\t"  
          " This Program will determine your Zodiac Sign."  
          " \n\n\n\n\t\t  "  
          "  Input Your Birth Month No.: ";  
      cin >> month;  
      cout << " \n\t\t  "  
                "  Input Your Birth Date: ";  
      cin >> date;  
      if (month == 3 && date >= 21 || month == 4 && date <= 20)  
   {  
            cout<<"\n\n\n\t\t    Your Zodiac Sign is Aries! "; cout<<endl;  
      }  
   else if (month == 4 && date >= 21 || month == 5 && date <= 21)  
   {  
           cout<<"\n\n\n\t\t    Your Zodiac sign is Taurus"; cout<<endl;  
      }  
   else  
      if (month == 5 && date >= 22 || month == 6 && date <= 22)  
   {   
           cout<<"\n\n\n\t\t    Your Zodiac sign is Gemini"; cout<<endl;  
      }  
   else if (month == 6 && date >= 23 || month == 7 && date <= 23)  
   {   
           cout<<"\n\n\n\t\t    Your Zodiac is Cancer"; cout<<endl;  
      }  
   else if (month == 7 && date >= 24 || month == 8 && date <= 23)  
   {  
            cout<<"\n\n\n\t\t    Your Zodiac sign is Leo"; cout<<endl;  
      }  
   else if (month == 8 && date >= 24 || month == 9 && date <= 23)  
   {  
            cout<<"\n\n\n\t\t    Your Zodiac sign is Virgo"; cout<<endl;  
      }  
   else if (month == 9 && date >= 24 || month == 10 && date <= 23)  
   {  
            cout<<"\n\n\n\t\t    Your Zodiac sign is Libra"; cout<<endl;  
      }  
   else if (month == 10 && date >= 24 || month == 11 && date <= 22)  
   {  
            cout<<"\n\n\n\t\t    Your Zodiac sign is Scorpio"; cout<<endl;  
      }  
   else if (month == 11 && date >= 24 || month == 12 && date <= 21)  
   {  
            cout<<"\n\n\n\t\t    Your Zodiac sign is Saguittarius"; cout<<endl;  
      }  
   else if (month == 12 && date >= 22 || month == 1 && date <= 20)  
   {  
            cout<<"\n\n\n\t\t    Your Zodiac sign is Capricorn"; cout<<endl;  
      }  
   else if (month == 1 && date >= 21 || month == 2 && date <= 19)  
   {  
            cout<<"\n\n\n\t\t    Your Zodiac sign is Aquarius"; cout<<endl;  
      }  
   else if (month == 2 && date >= 20 || month == 3 && date <= 20)  
   {  
            cout<<"\n\n\n\t\t    Your Zodiac sign is Pieces"; cout<<endl;  
      }    
      else {  
        cout << "\n\t\t\t Incorrect Input!! Try Again! ";  
        system ("pause");  
        system("cls");  
        goto start;  
      }  
      cout << " \n\n \t\t To Try Again Press 1, or Press 2 to Quit ";  
   cin >> a;  
   system ("cls");   
   if (a==1)  
   goto start;  
   if (a==2)  
   {        
   cout << "\n";  
      }  
      return 0;  
 }  

Berikut adalah tampilan output nya