how do I write a C++ program which take 4 integer inputs from user and show the user largest value from 4 inputs using if else [closed]

I need only to use if else statement

#include <iostream>
using namespace std;
int main ()
{
    int a,b,c,d;
    cout<<"Ener any four number\n";
    cin>>a>>b>>c>>d;
    if(a>b)
    {
        if(a>c)
        {
            if(a>d)
            {
                cout<<"largest value="<<a;
            }
            else
            {
                cout<<"largest value="<<d;
            }
        }
        else
        {
            if(c>d)
            {
                cout<<"largest value ="<<c;
            }
            else
            {
                cout<<"largest value ="<<d;
            }
        }
    }
    else
    {
        if(b>c)
        {
            if(b>d)
            {
                cout<<"largest value ="<<b;
            }
            else
            {
                cout<<"largest value ="<<d;
            }
        }
        else
        {
            if(c>d)
            {
              cout<<"largest value ="<<c;   
            }
            else
            {
                cout<<"largest value ="<<d;
            }
        }
    }
    return 0;
}