lst-0017-book.cpp
// ... extract ...
bool isPrime(int n); // Declaration of function defined later
void calculatePrimesUpTo(int limit) {
for(int n=3; n<limit; n=n+2) {
if(isPrime(n)) { // Use of function defined later
primes.push_back(n);
}
}
}
bool isPrime(int n) { // Definition after useage
// ... as before ...
}