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| 1 | #include <iostream> | |
| 2 | #include <functional> | |
| 3 | ||
| 4 | std::function<double(double, double)> ops[] = {[](double x, double y){return x+y;}, [](double x, double y){return x-y;}, [](double x, double y){return x*y;}, [](double x, double y){return x/y;}};
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| 5 | ||
| 6 | int main() | |
| 7 | {
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| 8 | int act=-1; | |
| 9 | double v1, v2; | |
| 10 | std::cout << "Hello. How much you smoked marijuana that the calculator talking to you?" << std::endl << "Actions:\n1 - addition\n2 - subtraction\n3 - multiplication\n4 - division\n0 - exit" << std::endl; | |
| 11 | do | |
| 12 | {
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| 13 | std::cout << "Enter action: " << std::endl; | |
| 14 | std::cin >> act; | |
| 15 | } while (act < 0 || act > 4); | |
| 16 | - | return (act == 0) ? 0 : [](int act){
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| 16 | + | |
| 17 | - | double v1, v2; |
| 17 | + | return (act == 0) ? 0 : (std::cout << "and now for some values: ", std::cin >> v1 >> v2, std::cout << ops[act - 1](v1, v2) << std::endl, 0); |
| 18 | - | std::cout << "and now for some values: "; |
| 18 | + |
