// Sum -> Product ((+|-) Product)*
Expression::Node *Expression::parseSum() {
//printf("parsing sum\n");
Node *result = parseProduct();
for (;;) {
if (consume("+")) {
result = new Plus(result, parseProduct());
} else if (consume("-")) {
result = new Minus(result, parseProduct());
} else {
return result;
}
}
//printf("done parsing sum\n");
}
Product getProduct(unsigned int id){
Product p;
std::ifstream inputProducts("Products.txt");
char line[32];
memset(line, 0, 32);
while (inputProducts){
inputProducts.getline(line, 32);
parseProduct(line, p);
if (p.id == id){
break;
}
}
inputProducts.close();
return p;
}
