//C++ header file section
#include <iostream>
using namespace std;
int main ()
{
    //Variables
    int numOfPeople;
    int capacityOfRoom;
    char userChoice ;
    
    //Use do-while to repeat the input unitl user choice is not entered'y'
	do
	{
	  //Read input as the maximum room capacity
	    // and the number of people to attend 
	    //the meeting
		cout << "Enter the maximum room capacity: ";
		cin >> capacityOfRoom;
		cout << "Enter the number of people to attend the meeting: ";
		cin >> numOfPeople;
	/*If the number of people is less than or equal to the maximum 
	room capacity, the program announces that it is legal to 
	hold the meeting and tells how many additional 
	people may legally attend. */
	if(numOfPeople <= capacityOfRoom)
		cout << "You can hold the meeting legally!";
	/*If the number of people exceeds the maximum room capacity,
	 the program announces that the meeting cannot be held as 
	 planned due to fire regulations and tells how many people 
	 must be excluded in order to meet the fire regulations
	*/
	else if (numOfPeople > capacityOfRoom)
	{
		cout <<"Warning! you can not hold the meeting." 
         <<"But if you still want to hold"
		<<"the meeting you have to exclude: " 
        << (numOfPeople - capacityOfRoom) << " guest(s)..";
	}
	cout << endl << "Do you want to continue again the program? y/n:  ";
	cin >> userChoice;
	cout << endl << endl;
}
while ( userChoice =='y' || userChoice == 'Y');
cout << "\nExit program...THANK YOU\n\n";
return 0;
} 

Output Result:

Enter the maximum room capacity: 500                                                                                        
Enter the number of people to attend the meeting: 400                                                                         
You can hold the meeting legally!                                                                                             
Do you want to continue again the program? y/n:  y

Enter the maximum room capacity: 200                                                                                          
Enter the number of people to attend the meeting: 200                                                                         
You can hold the meeting legally!                                                                                             
Do you want to continue again the program? y/n:  y

Enter the maximum room capacity: 300                                                                                          
Enter the number of people to attend the meeting: 500                                                                         
Warning! you can not hold the meeting. But if you still want to hold the meeting you have to exclude: 200 guest(s)..
           
Do you want to continue again the program? y/n:  n

Exit program...THANK YOU