(Averaging Integers) Write a program that uses a for statement to calculate and print the average of several integers. Assume the last value read is the sentinel 9999. A typical input sequence might be 10 8 11 7 9 9999 indicating that the program should calculate the average of all the values preceding 9999.

Question

What will be an ideal response?

Answer 1

```
// Average a sequence of integers.
#include
using namespace std;

int main()
{
int value; // current value
int count = 0; // number of inputs
int total = 0; // sum of inputs

// prompt for input
cout << "Enter integers (9999 to end):" << endl;
cin >> value;

// loop until sentinel value read from user
while ( value != 9999 )
{
total += value; // update sum
count++; // update number of inputs

cin >> value; // read in next value
} // end while

// if user entered at least one value
if ( count != 0 )
cout << "\nThe average is: "
<< static_cast< double > ( total ) / count << endl;
else
cout << "\nNo values were entered." << endl;
} // end main
```