magick_with_goto

#include <iostream>

using namespace std;

int main()
{
    int portal_val = 0;
    int params[10];
    int results[10];
    goto prg_start;

portals:

    switch(portal_val)
    {
        case 0 : goto prg_start;
        case 1 : goto after_f;
        //
        default : goto prg_start;
    }

start_f:

    results[0] = params[0] * params[0];
    goto portals;

prg_start:

    int x;
    cout << "enter X:" << endl;
    cin >> x;

    // start sqr func
    params[0] = x;
    portal_val = 1;
    goto start_f;
after_f:
    int res = results[0];
    cout << "Answer: " << res << endl;
    return 0;
}