Program to find greatest number from three using conditional operator

/*Write Program to find greatest number from three using conditional operator Using C++ or Cpp*/

#include<iostream.h>
#include<conio.h>
int maximum(int,int,int);
void main()
{
int n1,n2,n3,ans;

clrscr();
cout<<"\nProgram to find greatest number from three using conditional operator";
cout<<"Enter first number=";
cin>>n1;
cout<<"\nEnter second number=";
cin>>n2;
cout<<"\nEnter third number=";
cin>>n3;
ans=maximum(n1,n2,n3);
cout<<"\nGreatest value from three is:"<<ans;
getch();
}
int maximum(int num1,int num2,int num3)
{
int max;
max=(num1>num2?num1>num3?num1:num2:num2>num3?num2:num3);
return(max);
}