Check out example codes for "making random numbers in c++". It will help you in understanding the concepts better.

Code Example 1

/* rand example: guess the number */ #include <stdio.h>      /* printf, scanf, puts, NULL */ #include <stdlib.h>     /* srand, rand */ #include <time.h>       /* time */  int main () {   int iSecret, iGuess;    /* initialize random seed: */   srand (time(NULL));    /* generate secret number between 1 and 10: */   iSecret = rand() % 10 + 1;    do {     printf ("Guess the number (1 to 10): ");     scanf ("%d",&iGuess);     if (iSecret<iGuess) puts ("The secret number is lower");     else if (iSecret>iGuess) puts ("The secret number is higher");   } while (iSecret!=iGuess);    puts ("Congratulations!");   return 0; }

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