55 lines
1.1 KiB
C++
55 lines
1.1 KiB
C++
#include <iostream>
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#include <string>
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int polz(void) {
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while(1) {
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std::string pol;
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std::cout << "Знак" << std::endl;
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std::cin >> pol;
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double x1;
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std::cout << "Первое число" << std::endl;
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std::cin >> x1;
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double x2;
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std::cout << "Второе число" << std::endl;
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std::cin >> x2;
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if(pol == "+") {
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std::cout << x1 << pol << x2 << "=" << x1+x2 << std::endl;
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}
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else if(pol == "-") {
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std::cout << x1 << pol << x2 << "=" << x1-x2 << std::endl;
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}
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else if(pol == "exit") {
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break;
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}
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else if(pol == "*") {
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std::cout << x1 << pol << x2 << "=" << x1*x2 << std::endl;
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}
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else if(pol == "/") {
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std::cout << x1 << pol << x2 << "=" << x1/x2 << std::endl;
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}
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else {
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std::cout << "Неверный знак" << std::endl;
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break;
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}
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}
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return 1;
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}
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int main() {
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while(1) {
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std::cout << "1. Начать\n2. Закончить" << std::endl;
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int pol1;
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std::cout << "Введите число" << std::endl;
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std::cin >> pol1;
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if(pol1 == 1) {
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polz();
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}
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else if(pol1 == 2) {
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return 0;
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}
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else {
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std::cout << "Введите верное число" << std::endl;
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}
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}
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return 0;
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}
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