Duda programa C++

[pacoman]

Prueba con esto:

Código C++:

#include <iostream>
 
using namespace std;
 
int main ()
 
{
int a, b ,c;
cin>>a;
cin>>b;
cin>>c;
if (a>=b and a>=c){cout<<a<<endl;}
if (b>=a and b>=c){cout<<b<<endl;}
if (c>=a and c>=b){cout<<c<<endl;}
}