Just print()

advanced c++17

Related: How to Print in C++

It’s possible to have a more comfortable to use print function in C++. We’ll write a function template to do it. The following function takes any number of arguments of any type and passes them, in order, to std::cout‘s left shift operator(<<).

#include <iostream>

template <typename ...Args>
void print(const Args& ...args) {
  (std::cout << ... << args);
}

int main() {
  print("Mars is ", 1.5, "AU from the Sun.\n");
}

Mars is 1.5AU from the Sun.

println

If we want a “print line” function that always appends a newline character (\n) after every print that is very easy as well:

#include <iostream>

template <typename ...Args>
void println(const Args& ...args) {
  (std::cout << ... << args) << "\n";
}

int main() {
  println("Venus is ", 0.7, "AU from the Sun.");
  println("Mars is ", 1.5, "AU from the Sun.");
}

Venus is 0.7AU from the Sun.
Mars is 1.5AU from the Sun.