Generate any number of random numbers. Give the desired number to the program as a command line argument.

random.cpp

#include <iostream>
#include <cstdlib>
#include <time.h>

using namespace std;

void usage(const char * name) {
   cout << "Usage: " << name << " followed by the number of random digits to display"
        << endl << "e.g. " << name << " 5" << endl;
}

int main(int argc, char ** argv) {

   // check the arguments
   if (argc != 2) {
      usage(argv[0]);
      
      return 1;
   }

   // get the argument and start the clock
   int quantity = atoi(argv[1]);
   srand(time(NULL));

   // output the random numbers
   for (int i = 0; i < quantity; i++) {
      cout << (rand() % 100) + 1;
      
      if (i != (quantity - 1)) {
         cout << " ";
      }
   }
   
   cout << endl;

   return 0;
}