Write a program that will generate 1000 random integers in the range 0-49. (C++)

I've looked around other questions asked here but can't quite find what I need.

I've got this question;

Write a program that will generate 1000 random integers in the range 0-49. It should count and report how many were in the range 0-24 and how many were in the range 25-49.

and this is what I have so far;

#include<iostream>
#include<ctime>   //For time()
#include<cstdlib> //For rand() and srand()


using namespace std;
int main()
{
int x;
int counter = 0;
int y = 0;
int z = 0;

srand(time(NULL));



for (counter = 0; counter < 1000; counter++) {
    {
        x = rand() % 49 + 1;
        if (x >= 0 && x <= 24)
        {
            y++;
        }
        else if (x > 24 && x <= 49)
        {
            z++;
        }
    }

    cout << "Number of numbers between 0-24: " << y << endl;
    cout << "Number of numbers between 25-49: " << z << endl;



    system("pause");
    return 0;
   }
 }

It loops once but I can't understand how to get it to loop over and over until 1000 numbers have been generated and categorized.

I'm pretty new to C++ so could someone explain how to get this to loop? Have I missed something super obvious?