#include <iostream>

void f(int) {
 std::cout << "Calling function f(int)" << std::endl;
}

void f(double) {
  std::cout << "Calling function f(double)" << std::endl;
}

void f(char*) {
  std::cout << "Calling function f(char*)" << std::endl;
}
/*
template <typename T>
void f(T) {
    std::cout << "Calling function that is instantiated from template" << std::endl;
}
*/

void f(int, double) {
    std::cout << "Calling function f(int, double)" << std::endl;
}

void f(double, double) {
    std::cout << "Calling function f(double, double)" << std::endl;
}
/*
void f(double, int) {
    std::cout << "Calling function f(double, int)" << std::endl;
}
*/

int main() {
    f('a');   // f(int) – numeric promotion
    f(0);     // f(int) – exact match
    //long a=5L;
    //f(a);  //ambiguous, long to int, and long to double are standard conversions
    //f(double(a)); // ambiguity is resolved by explicit conversion

    // 1. parameter {f1} 2.parameter {f1, f2}: {f1} intersection {f1, f2} = {f1}
    f('a', 1);   // f(int, double)
    return 0;
}