//#(compile) c++; compiler:g132; options:-O3 -std=c++23; libs:-
// https://godbolt.org/z/MPPsbdq9c
#include <iostream> // cin, cout for input and output
void input(unsigned &birthDay_,
unsigned &birthMonth_,
unsigned &birthYear_,
unsigned long long &taxnumber_,
double &bodyheight_)
{
/* Inputs still without good error handling... */
std::cout << "Date of birth: "; std::cin >> birthDay_;
std::cout << "Month of birth: "; std::cin >> birthMonth_;
std::cout << "Year of birth: "; std::cin >> birthYear_;
std::cout << "Tax number: "; std::cin >> taxnumber_;
std::cout << "Height: "; std::cin >> bodyheight_;
}
int main() {
/* data */
unsigned birthDay_ = 0;
unsigned birthMonth_ = 0;
unsigned birthYear_ = 0;
unsigned long long taxnumber_ = 0;
double bodyheight_ = 0.0;
/* Input */
input(birthDay_, birthMonth_, birthYear_, taxnumber_, bodyheight_);
/* Calculations */
// ...
}