Where to put default parameter value in C++?

Question

What's the place for the default parameter value? Just in function definition, or declaration, or both places?

Answer 1

I've always put them in the definition...

the header must show the complete function definition and arguments

using namespace std;

#include <iostream>

void printChar( int n, char chChar='*')

{

for (int iLoop=0; iLoop<n; iLoop++)

{

cout<<chChar;

}

}

int main()

{

printChar(10);

cout << endl;

printChar(15,'#');

}