A function with no arguments in the prototype

A function with no arguments in the prototype

Consider we have a function with the following prototype
void fun();
How many arguments it will take in C and C++?

Ans:In C it can take any no of arguments, but in C++ it takes no argument.

Ex:
int main()
{
int i,j,k;
i = 1;
j = 2;
k = 3;
foo(); //valid in both C and C++
foo(i); //Valid in C but invalid in C++
foo(i ,j); //Valid in C but invalid in C++
foo(i,j,k); //Valid in C but invalid in C++
}
void foo()
{
cout<<"In function";
}