How Can I Generate a Random Number

In the code below is shown how to generate a random number in C++:

#include <iostream>
#include <stdlib.h>
#include <time.h>
using namespace std;
            
            
int main()
{
            
srand (time(NULL));
            
//Generates a Random Number 
int randomnumber= rand();
            
cout << "Generates a Random Number: " << randomnumber << endl;
            
            
//Generates a Random Number from 1 to 10
int randomnumber10= rand() % 10 + 1;
            
            
cout << "Generates a Random Number from 1 to 10: " << randomnumber10 << endl;
            
            
            
//Generates a Random Number from 1 to 100
int randomnumber100= rand() % 100 + 1;
            
            
cout << "Generates a Random Number from 1 to 100: " << randomnumber100 << endl;
            
            
            
//Generates a Random Number from 1 to 1000
int randomnumber1000= rand() % 10 + 1;
            
            
cout << "Generates a Random Number from 1 to 1000: " << randomnumber1000 << endl;
            
            
//Generates a Random Number from 10 to 100
int randomnumber_range10_100= rand() % 100 + 10;
            
            
cout << "Generates a Random Number from 10 to 100: " << randomnumber_range10_100  << endl;
            
            
            
//Generates a Random Number from 100 to 1000
int randomnumber_range100_1000= rand() % 1000 + 100;
            
            
cout << "Generates a Random Number from 100 to 1000: " << randomnumber_range100_1000  << endl;
            
            
return 0;
            
}

The output of this program is shown below: