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update demo flie l5.cpp, add new function polz for request numbers and sign

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root 2026-05-28 22:52:55 +03:00
parent fa79441e47
commit 03bc2b79bb
1 changed files with 25 additions and 8 deletions
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31
c++/l5.cpp
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@ -1,9 +1,8 @@
#include <iostream> #include <iostream>
#include <string> #include <string>
int main() { int polz(void) {
int s = 0; while(1) {
while(s <= 3) {
std::string pol; std::string pol;
std::cout << "Знак" << std::endl; std::cout << "Знак" << std::endl;
std::cin >> pol; std::cin >> pol;
@ -15,24 +14,42 @@ int main() {
std::cin >> x2; std::cin >> x2;
if(pol == "+") { if(pol == "+") {
std::cout << x1 << pol << x2 << "=" << x1+x2 << std::endl; std::cout << x1 << pol << x2 << "=" << x1+x2 << std::endl;
s++;
} }
else if(pol == "-") { else if(pol == "-") {
std::cout << x1 << pol << x2 << "=" << x1-x2 << std::endl; std::cout << x1 << pol << x2 << "=" << x1-x2 << std::endl;
s++; }
else if(pol == "exit") {
break;
} }
else if(pol == "*") { else if(pol == "*") {
std::cout << x1 << pol << x2 << "=" << x1*x2 << std::endl; std::cout << x1 << pol << x2 << "=" << x1*x2 << std::endl;
s++;
} }
else if(pol == "/") { else if(pol == "/") {
std::cout << x1 << pol << x2 << "=" << x1/x2 << std::endl; std::cout << x1 << pol << x2 << "=" << x1/x2 << std::endl;
s++;
} }
else { else {
std::cout << "Неверный знак" << std::endl; std::cout << "Неверный знак" << std::endl;
break;
}
}
return 1;
}
int main() {
while(1) {
std::cout << "1. Начать\n2. Закончить" << std::endl;
int pol1;
std::cout << "Введите число" << std::endl;
std::cin >> pol1;
if(pol1 == 1) {
polz();
}
else if(pol1 == 2) {
return 0; return 0;
} }
else {
std::cout << "Введите верное число" << std::endl;
}
} }
return 0; return 0;
} }