C++ :

#include <iostream>
using namespace std;
int main()
{	
	int a,b,c;
	int max;
 	cin>>a>>b>>c;
 	if(a>b)	max=a;
 	else	max=b;
	if(c>max)	max=c;
	cout<<max<<endl;
  	return 0;
}