Function overloading has a return type...

Ex:
#include<iostream>
using namespace std;
//Function 1:

int max(int a, int b)
{
   return (a>b)? a:b;
}

//Function 2:

float max(float a, float b)
{
   return(a>b)? a:b;
}

int main()
{
   int c;
   float d;
   c=max(5,4);        //will display 5
   cout<<c<<endl;
   d=max(3.14,6.15);  //will display 6.15
   cout<<d<<endl;
   return 0;
}

Important Concepts in Fn. Overloading:
a) Fun Overloading depends upon the type/number/order in 
which the arguments are passed...
b) Fun Overloading can take place for a function which is 
within the same scope... (i.e.) both function 1:, and 
Function 2: should be in the same { ...} (both the 
functions are within main() (i.e. same scope)...