IF statement to control range of numbers using array C++ :  I have created an array that holds 5 numbers, and the user inputs the numbers. If the mark is less than 0 and greater than 100, I want to print out "invalid mark number". How could I go about doing this? I thought about using an IF statement but didn't know how to go about it.  

    using namespace std; 

    int mark[5];

    int main () 
    {
	cout << "enter mark 0:  ";
	cin >> mark[0];

	
	cout << "enter mark 1:  ";
	cin >> mark[1];

	cout << "enter mark 2:  ";
	cin >> mark[2];

	cout << "enter mark 3:  ";
	cin >> mark[3];

	cout << "enter mark 4:  ";
	cin >> mark[4];

    }