DiseaseClassificationExpertSystem.cpp

#include <algorithm>
#include <cctype>
#include <climits>
#include <cmath>
#include <iostream>
#include <map>
#include <memory>
#include <queue>
#include <set>
#include <sstream>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
using namespace std;

map<string, set<string>> diseases;

void initialize() {
    diseases["influenza"] = {"fever", "cough", "body ache", "fatigue"};
    diseases["cold"] = {"sneeze", "cough", "runny nose", "mild fever"};
    diseases["allergy"] = {"sneeze", "itchy eyes", "runny nose", "no fever"};
}

string diagnose(const set<string>& symptoms) {
    for (const auto& entry : diseases) {
        if (includes(symptoms.begin(), symptoms.end(),
                     entry.second.begin(), entry.second.end())) {
            return entry.first;
        }
    }
    return "unknown condition";
}

int main() {
    initialize();
    set<string> patient = {"sneeze", "cough", "runny nose", "mild fever"};
    cout << "Diagnosis: " << diagnose(patient) << '\n';
    return 0;
}