C++ All Int are valid for the if statement | if(choice == 1)

I've got some probably simple questions:

1. why is every Integer accepted as a valid input in the if statement

2. and why is the code following the if statement not being executed

#include 
#include 

int main(){
    int choice;
    
    std::cout << "Enter the number 1" <<'\n';

    while (!(std::cin >> choice)){
        if(choice == 1) {
            std::cout << "good" << '\n';
            break;
        }
        else{
            std::cout << "bad" << '\n';
            std::cin.clear();
            std::cin.ignore(std::numeric_limits::max(), '\n');
            std::cout << "enter the number 1!"<< '\n';
         }
    }
    return 0;
}