What is the output of the following C++ program?#include using namespace std; void f(int) { cout

What is the output of the following C++ program?

#include <iostream>
using namespace std;
void f(int) { cout << "I"; }
void f(double) { cout << "D"; }
int main() {
    f('a'); f(3.5f); f(2);
    return 0;
}