/* Prime Number Test with Range test all numbers within a to b infinite while loop 0 to exit bool prime function returns true/false so used in if statement first divisor returns false and automatically ends loop for loop used to test numbers a to b Chapter 5, 5.2 C++ Without Fear, 3rd Edition (Overland) Created: 10/21/18 First Successful Run: 10/21/18 */ #include #include using namespace std; bool prime(int x); int main() { int a; int b; cout << "Prime Number Test.\n\n"; while (true) { //repeat question not necessary with this while loop cout << "Please enter a range of numbers to test (0 to exit). " << endl; cout << "Enter lower range integer (a): "; cin >> a; if (a == 0) { return false; } cout << "Enter higher range integer (b): "; cin >> b; if (b == 0) { return false; } while (a >= b) { cout << "a must be less than b" << endl; cout << "Enter lower range integer (a): "; cin >> a; cout << "Enter higher range integer (b): "; cin >> b; } for (int i = a; a<=b; ++a) { if (prime (a)) { //prime returns a true false value so it can be used as an if test cout << a << " is prime" << endl; } else { cout << a << " is not prime" <

***Prime Number Test Range v3 (Successful)