cp2019_zad4

#include <iostream>
#include <stdio.h>
#include <string>
#include <string.h>

#define print(var) cout << #var << ": " << var << endl;
using namespace std;

string solve(int a, char o, int b, int r);

int main() {
    int a, b, r;
    char op = '+';
    string input;


    while ( (cin >> input) && input != "") {

        //sscanf(sentence, "%s %*s %d", str, &i);

        if (input.find('+') != -1) {
            input.at(input.find('+')) = ' ';
            op = '+';
        }
        else if (input.find('-') != -1) {
            input.at(input.find('-')) = ' ';
            op = '-';
        }
        else if (input.find('x') != -1) {
            input.at(input.find('x')) = ' ';
            op = '*';
        }
        else {
            input.at(input.find(':')) = ' ';
            op = ':';
        }

        sscanf(input.c_str(), "%d %d=%d", &a, &b, &r);

        cout << solve(a, op, b, r) << endl;
    }
}

string solve(int a, char o,int b, int r) {
    double result = 0.0;

    switch (o)
    {
    case '+':
        result = a + b;
        break;
    case '-':
        result = a - b;
        break;
    case '*':
        result = double(a) * b;
        break;
    case ':':
        result = double(a) / b;
        break;
    }

    return result == r ? "Correct" : "Incorrect";
}