#include "util.h" #include #include int main() { stack numbers; string value; while(true) { cout << "> "; cin >> value; if (value == "exit") break; else if (value == "+") { if (numbers.size()<2) { cout << "Error - Not enough numbers in stack" << endl; } else { double first = numbers.top(); numbers.pop(); double second = numbers.top(); numbers.pop(); numbers.push(first + second); cout << numbers.top() << endl; } } else if (value == "-") { if (numbers.size()<2) { cout << "Error - Not enough numbers in stack" << endl; } else { if (numbers.size()<2) break; double first = numbers.top(); numbers.pop(); double second = numbers.top(); numbers.pop(); numbers.push(second - first); cout << numbers.top() << endl; } } else if (value == "*") { if (numbers.size()<2) { cout << "Error - Not enough numbers in stack" << endl; } else { double first = numbers.top(); numbers.pop(); double second = numbers.top(); numbers.pop(); numbers.push(first * second); cout << numbers.top() << endl; } } else if (value == "/") { if (numbers.size()<2) { cout << "Error - Not enough numbers in stack" << endl; } else { double first = numbers.top(); numbers.pop(); double second = numbers.top(); numbers.pop(); numbers.push(second / first); cout << numbers.top() << endl; } } else { numbers.push(stod(value)); } } return 0; }