how can i combine this 2 c++ in to 1 c++ prog thx for the help

the first one

Code:
#include <iostream>
#include <conio.h>
using namespace std;
main ()
{
     int a,b,sum,dif,prod,quot;
     cout << " \n Enter the First number: ";
     cin >> a;
     cout << " \n Enter the Second number: ";
     cin >> b;
     sum = a + b;
     dif = a - b;
     prod = a * b;
     quot = a / b;
     cout << " \n The sum is: "<< sum ;
     cout << " \n The difference: "<< dif ;
     cout << " \n The Product is: "<< prod;
     cout << " \n The quotient is: "<< quot;
     cout << " \n \n \n ";
     return main();
     getch();
}
and this one

Code:
#include <iostream>
#include <conio.h>
using namespace std;
main()
{
      int a, b;
      char response;
      cout << "*************************************** \n";
      cout << " \t INPUT THE DAY NUMBER: " ;
      cin >> a;
      if (a==1)
      cout << " \t THE DAY IS MONDAY\n " ;
      if (a==2)
      cout << " \t THE DAY IS TUESDAY\n " ;
      if (a==3)
      cout << " \t THE DAY IS WEDNESDAY\n " ;
      if (a==4)
      cout << " \t THE DAY IS THURSDAY\n " ;
      if (a==5)
      cout << " \t THE DAY IS FRIDAY\n " ;
      if (a==6)
      cout << " \t THE DAY IS SATURDAY\n " ;
      if (a==7)
      cout << " \t THE DAY IS SUNDAY\n " ;
      return main();
      getch();
}
into one prog