check if cin got the wrong type
#include <iostream>
#include <limits>
int main() {
int userInput;
std::cout << "Enter an integer: ";
while (!(std::cin >> userInput)) {
std::cin.clear();
std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
std::cout << "Invalid input. Please enter an integer: ";
}
std::cout << "You entered: " << userInput << std::endl;
return 0;
}