C++ : read three integers and find sum, average, product, largest and smallest of these numbers

#include<iostream>
#include<conio.h>
using namespace std;
int main()
{
float a,b,c,sum=0.00,avg=0.00,pro=0.00,large,small;
cout<<"Enter any three number (a,b,c) : ";
cin>>a>>b>>c;
sum=a+b+c;
avg=sum/3;
pro=a*b*c;
if(a>b&&a>c)
   large=a;
else if(b>a&&b>c)
   large=b;
else
   large=c;
if(a<b&&a<c)
   small=a;
else if(b<a&&b<c)
   small=b;
else
   small=c;
cout<<endl<<endl;
cout<<"Sum = "<<sum<<endl;
cout<<"Average = "<<avg<<endl;
cout<<"Product = "<<pro<<endl;
cout<<"Largest Number = "<<large<<endl;
cout<<"Smallest Number = "<<small<<endl;
getch();
return(0);
}