Can someone tell me how is it dome

Question

#include <iostream>
#include <string>
using namespace std;
int main() {
string a;
string b;
cout<<"Enter the first colour"<<endl;
cin>>a;
cout<<"Enter the second colour";
cin>>b;
if(a=red && b=blue){
cout<<"purple";
}
if(a=blue && b=yellow){
cout<<"green";
}
if(a=yellow && b=red) {
cout<<"orange";
}
else
{
cout<<"problem";

}

}

Answer 1

What exactly do you need help with?

Answer 2

dont understand what i did wrong