Why we can't write the functions like this?

Question

#include <iostream>
using namespace std;

void printNumber(int x) {
cout << "Prints an integer: " << x << endl;
}
void printNumber(float x) {
cout << "Prints a float: " << x << endl;
}

int main() {

printNumber(2);
printNumber(2.1);
}

Answer 1

Thank's, it is working!