#include using namespace std; //Defining 3 functions: add5, multiply8, range int add5(int x) { cout << "Adding 5 to " << x << "." << endl; return x + 5; } int multiply8(int x) { cout << "Multiplying " << x << " by 8." << endl; return x * 8; } void range(int x) { if (x < 0) { x = -x; } cout << "Printing all the integers between 0 and " << x << "." << endl; for (int i = 0; i < x; i++) { cout << i << endl; } } int main() { int a, b, c, d; a = 1; b = 2; c = 5; d = 10; int a2, b2, c2, d2; //Function add5 will be tested 4 times: a2 = add5(a); cout << "add5(" << a << ") = " << a2 << endl; b2 = add5(b); cout << "add5(" << b << ") = " << b2 << endl; c2 = add5(c); cout << "add5(" << c << ") = " << c2 << endl; d2 = add5(d); cout << "add5(" << d << ") = " << d2 << endl; //Function multiply8 will be tested 4 times: a2 = multiply8(a); cout << "multiply8(" << a << ") = " << a2 << endl; b2 = multiply8(b); cout << "multiply8(" << b << ") = " << b2 << endl; c2 = multiply8(c); cout << "multiply8(" << c << ") = " << c2 << endl; d2 = multiply8(d); cout << "multiply8(" << d << ") = " << d2 << endl; //Function range will be tested 4 times: range(a); range(b); range(c); range(d); return 0; }

Function example