// deafualt arguments
#include<iostream>
using namespace std;

void f(int i, float x = 0, char ch = 'A') {
 cout << i << "  " << x << "  " << ch << endl;
}

int main() {
 f(5, 1.23, 'E'); f(5); f(5, 1.23);
 return 0;
}