Can someone explain reason for the answer? How the output is 112 ?

Question

#include<iostream>
using namespace std;
template<class T>
void f(T){
static int i=0;
cout<<++i;
}
int main(){
f(1);
f(1.0);
f(1);
}

output:- 112 why?

Answer 1

two different functions are created. (which never actually use the values passed to them btw)

void f(int)
void f(float)

the output is actually 1, 1, 2

soo the code is calling void f(int) twice and void f(float) once.

static keyword in effect makes i sort of like a global and it is never set back to 0 after initialization

see: http://www.cprogramming.com/tutorial/statickeyword.html

Answer 2

It is not required by the compiler.you might get a warning though

Answer 3

https://code.sololearn.com/csIg6Vol03ev/?ref=app

Answer 4

Why it gets compiled even though there is no variable in the function parameters("void f(T)")??