Даны три числа. Найти сумму двух наибольших из них

#include <iostream>
 
using namespace std;
 
int main()
{
int a,b,c,sum=0;
cin >> a >> b >> c;
if (a<=b && a<=c){sum=b+c;}
if (b<=c && b<=a){sum=a+c;}
if (c<=a && c<=b){sum=a+b;}
cout << sum << endl;
system("PAUSE >> void");
return 0;
}

#include <iostream>
#include <cmath>
 
using namespace std;
 
int main()
{
int a,b,c,sum=0,x;
cin >> a >> b >> c;
x=min(a,b);
x=min(x,c);
sum=a+b+c-x;
cout << sum << endl;
system("PAUSE >> void");
return 0;
}

#include <stdio.h>
#include <iostream>  
using namespace std;  
int answer_number1;
int answer_number2;
int answer_number3;
int main ()
{
  cout << "Enter your number1: ";
  cin >> answer_number1;
  cout << "Enter your number2: ";
  cin >> answer_number2;
  cout << "Enter your number3: ";
  cin >> answer_number3;
  if (answer_number1 > answer_number2 && answer_number2 > answer_number3)
    {
      cout << "Max number1: "<< answer_number1 <<", and max number2: " << answer_number2;
    }
  if (answer_number2 > answer_number1 && answer_number1 > answer_number3)
    {
      cout << "Max number2: " << answer_number2 << ", and max number1: " <<answer_number1;
    }
  if (answer_number3 > answer_number1 && answer_number1 > answer_number2)
    {
      cout << "Max number3: " << answer_number3 << ", and max number1: " <<answer_number1;
    }
  return 0;
}