Thread: k really need help here ..please

srand((unsigned)time(null)); is not working for making real rnd numbers..any suggestions??

You might try using NULL for the srand() command. C++ doesn't recognize it as "null".

One comon mistake is that srand should only be used once.

srand() by itself won't return a random number. You must use srand() and rand() together.

Code:

#include <iostream>
#include <cstdlib>
#include <ctime>

using namespace std;

int main()
{
   int c;

   srand( time(0) );

   c = 1 + rand() % 100;   // A random number from 1-100

  cout << "Your random number for today is " << c << endl;
  
  system("PAUSE");
  return 0;
}

rand() by itself returns pseudo-random numbers. If you just used rand() by itself, it would return the same random numbers each time you ran the program. To "randomize" the rand() function you use the srand() function. This "seeds" or "randomizes" what the rand() function produces. I use the time() function to seed srand() so it is almost completley random.

all had good points but its was the unsigned that was giving the grief.. many thanks to all for spending the time to reply