ImplicitTypeCasting

#include <iostream>
#include <bits/stdc++.h>
using namespace std;

int main()
{
    unsigned long long power,incorrect,incorrect2,incorrect3,incorrect4,incorrect5;
    unsigned long long correct,correct2,correct3,correct4;

    double power2,power3;

    power = 7 * pow(10, 17); // outputs 700000000000000000
    power2 = pow(10, 17); // outputs 100000000000000000.000000
    power3 = 7.0 * pow(10, 17); // outputs 700000000000000000.000000

    printf ("printf_power     %lld\n", power);
    printf ("printf_power2    %f\n", power2);
    printf ("printf_power3    %f\n", power3);

    correct = 42105263157890000 + power; // outputs 742105263157890000
    correct2 = 42105263157890000 + 700000000000000000; // outputs 742105263157890000
    correct3 = 42105263157890000 + (unsigned long long)(7 * pow(10, 17)); // outputs 742105263157890000
    correct4 = 42105263157890000 + power; // outputs 742105263157890000

    cout << "correct    " << correct << "." << endl;
    cout << "correct2   " << correct2 << "." << endl;
    cout << "correct3   " << correct3 << "." << endl;
    cout << "correct4   " << correct4 << "." << endl;

    incorrect = 42105263157890000 + (7 * pow(10, 17)); // outputs 74210526315789048

    incorrect2 = 42105263157890000 + (7 * 100000000000000000.00); // outputs 74210526315789048

    incorrect3 = 42105263157890000 + (7.0 * 100000000000000000.00); // outputs 74210526315789048

    incorrect4 = 42105263157890000 + 700000000000000000.00; // outputs 74210526315789048

    incorrect5 = 42105263157890000.00 + 700000000000000000.00; // outputs 74210526315789048

    double incorrect6 = 42105263157890000.00 + 700000000000000000.00; // outputs 74210526315789048.000000

    cout << "incorrect  " << incorrect << "." << endl;

    cout << "incorrect2 " << incorrect2 << "." << endl;

    cout << "incorrect3 " << incorrect3 << "." << endl;

    cout << "incorrect4 " << incorrect4 << "." << endl;

    cout << "incorrect5 " << incorrect5 << "." << endl;

    printf ("incorrect6 %f\n", incorrect6);

    return 0;
}