Function: ... Argument

[sonulohani]

Hello Friends,
Could you please tell me what is the meaning of this parameter "..." and how to access the ... parameter? The sample code is given below:-

#include <iostream>
using namespace std;
void foo(int x,...);
int main()
{
    foo(5);
    return 0;
}
 
void foo(int x,...)
{
    cout<<x;
}

#include <iostream>
using namespace std;
void foo(int x,...);
int main()
{
    foo(5);
    return 0;
}

void foo(int x,...)
{
    cout<<x;
}

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