Created
February 17, 2022 16:08
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| #include <iostream> | |
| #include <string> | |
| #include <map> | |
| #include <functional> | |
| #include <iterator> | |
| int main() { | |
| //Define operations and their respective function | |
| std::map<std::string, std::function<int(int, int)>> operations; | |
| operations["+"] = [&](int lhs, int rhs) { return lhs + rhs; }; | |
| operations["-"] = [&](int lhs, int rhs) { return lhs - rhs; }; | |
| operations["*"] = [&](int lhs, int rhs) { return lhs * rhs; }; | |
| operations["/"] = [&](int lhs, int rhs) { return lhs / rhs; }; | |
| std::string _operator; | |
| int lhs; | |
| int rhs; | |
| std::string useranswer; | |
| float correctanswer; | |
| while (true) { | |
| // Generate random numbers | |
| rhs = rand() % 100; | |
| lhs = rand() % 100; | |
| // Choose random operator | |
| auto iterator = operations.begin(); | |
| std::advance(iterator, rand() % operations.size()); | |
| std::string _operator = iterator->first; | |
| // Calculate correct answer | |
| correctanswer = operations[_operator](lhs, rhs); | |
| std::cout << "Solve:" << std::endl; | |
| std::cout << lhs << " " << _operator << " " << rhs << std::endl; | |
| std::cin >> useranswer; | |
| if (stoi(useranswer) == correctanswer) { | |
| std::cout << "Correct!" << std::endl; | |
| } else { | |
| std::cout << "Wrong, correct answer is " << correctanswer << std::endl; | |
| } | |
| std::cout << std::endl; | |
| } | |
| } |
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