Program closing out after I get input

[Warrior2089]

My program is a game. Two numbers are randomly generated until they match, and the player must guess where these two numbers will match. However, at line 111 after I get the player's guess, the program creates crazy numbers within the hundred-thousands range and then shuts off after it gets a match. It'd be very helpful to get some advice on this.

Thanks everybody.

Oh, and don't irk me for using Sleep. I know it's a bad thing to do but this is a just for fun assignment.

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <iostream>
#include <windows.h> // ALWAYS include when using Sleep function;
#include <ctime>

using namespace std;

int first = 5;
int second = 2;
int switchit;
int advancedfirst, advancedsecond;
int guess;


srand ( time(NULL) );

void firstnumber() // randomize first number
{
    first = rand() % 200 + 50;
}

void secondnumber() // randomize second number
{
    second = rand() % 200 + 50;
}



int advancedfirstnumber()
{
    advancedfirst = rand() % 500 + 50;
    return advancedfirst;
}



int advancedsecondnumber()
{
    advancedsecond = rand() % 500 + 50;
    return advancedsecond;
}

void advanced()
{
     system("CLS");
     //ask player to enter number guess; get number; create loop for 50-500
     int advancedguess;
     cout<<"********************************************\n\n\t\t\tADVANCED - 00000065432\n\n********************************************\n\n";
     cout<<"Welcome to Advanced difficulty. The number range has moved up from 50-200 to 50-500.";
     cout<<"I trust you have the patience for this one; it'll surely take a while.\n";
     cout<<"\n\t\t\t\tShall we begin?:";
     cout<<"\n\t\t\t";
     string begin;
     getline(cin, begin);
     if (begin == "yes" || begin == "sure" || begin == "ok" || begin == "yeah" || begin == "yea" ||
     begin == "hell yeah")
     {
           cout<<"\n\n\t\t\t\tVery well.\n";
     }
     else {
          cout<<"\n\n\t\t\t\tWell hurry up, I'll give you 20 seconds to get ready.\n";
          Sleep(5000);
          }
advancedrestart:
     cout<<"\nEnter a number between 50 and 500: ";
     cin>>advancedguess;
     cout<<"\n\n";
     do {
         // display number, two spaces, display second, two spaces
         advancedfirstnumber();
         cout<< advancedfirstnumber();
         cout<<"  ";
         advancedsecondnumber();
         cout<< advancedsecondnumber();
         cout<<"  ";
        } while (advancedfirst != advancedsecond);
     // check if the guess is equal to where the two numbers matched
     if (advancedguess == advancedfirst)
     {
                       cout<<"\n\n\t\t\t\tVery nice.\n\n";
                       cout<<"Well that's it for now, I'll be adding in another level soon.\n";
                       Sleep(2000);
                       exit (1);
     }
     
     else {
          cout<<"\n\n\t\t\t\tThat is incorrect.";
          Sleep(5000);
          cout<<"\n\n\t\t\t\t\t ...";
          goto advancedrestart;
          }
}
     
        
        

int main()
{
    cout<<"In this game, random numbers will be generated until those two numbers match.\n\n";
    Sleep(4000);
    cout<<"You will guess which number the two will match at.\n\n";
    Sleep(4000);
    cout<<"If you get it wrong, it will restart.\n";
    cout<<"Get ready.\n\n";
    Sleep(5000);
    cout<<"3.. "; Sleep(400); cout<<"2.. "; Sleep(400); cout<<"1.. "; Sleep(400); cout<<"go!\n\n\n"; // 3.. 2.. 1.. go!
 restart:
    cout<<"Guess a number between 50 and 200: ";
    cin >> guess;
    cout<<"Press enter.\n";
    cin.get();
    
    while (first != second) 
    {

          first = rand() % 200 + 50;
          cout<< first;
          cout<<"  ";
          second = rand() % 200 + 50;
          cout<<"  ";
          cout<< second;
    } 
    
    if (guess == first)
         {
              if (guess == second)
options:
              cout<<"Nice.\n\n\n\n\n\n\t\t\t\t";
              cout<<"1/ Restart\n\t\t\t\t";
              cout<<"2/ Move on to Advanced difficulty\n\t\t\t\t";
              cout<<"3/ Exit.\n";
              cin>>switchit;
              switch (switchit)
              {
                     case 1:
                             goto restart;
                             break;
                     case 2:
                             advanced();
                             break;
                     case 3:
                             exit (1);
                             break;
                     default:
                             cout<<"You had to enter 1-3, please do so.\n";
                             goto options;
                             break;
              }
         }
    else if (!guess == first)
         {
         goto restart;
         }
}

[Warrior2089]

SOLVED.