int eventDays(int& n)
{
	int events[MAX], numDays[MAX];
	int m;
	cout << "Please input an event number: ";
	cin >> n;
 
	m = events[n];
 
	cout << "answer: " << m << endl;
 
	return n;
}

void eventDays(string events[], int numDays[], int size)
{
   //display elements of events in a menu
   //have user input event number from menu
   //display number of days event takes
}

 
1. Ask the user for the event index.
2. User inputs x.
3. Check if 0 <= x < events array size.
4. If not, repeat from step 1.
5. You know that event[x] corresponds to numDays[y], so store numDays[y] in a temp variable
6. Print on screen that temp variable's content.
 

void eventDays(int events[], int numDays[], int n)
{
	int temp, k;
	ifstream infile;
    infile.open("ProjectInfo.txt");
	cout << "Please input an event number: ";
	cin >> n;
 
	events[n]=numDays[k];
	temp=numDays[k];
 
	cout << "answer= " << temp << endl;
 
	return;
}

void eventDays(int events[], int numDays[], int dimension) {
    int temp = 0, n = 0;
    cout << "Please input an event number: ";
    cin >> n;
    /* here you should check that events[n] won't result in an out-of-boundaries invalid access, I suggest you to put all the input in a while loop*/
    /*now you know that n is a valid event index. now ask yourself one question: are the arrays sorted so that # of days for event[x] is to be found in numDays[x] ? If the answer is yes then you can use the same index for the numDays array, otherwise you could do something like: */
    // int y = expr_to_n_corresponding_index;
    /* now you are ready to print the result */
    temp = numDays[n]; // or numDays[y], if you needed the previous instruction
    cout << "answer = " << temp << endl;
    return;
}