How can I generate different random numbers for each player?

Question

Both players get the same random number! ّI want each player to get a different number since they are throwing dice. here is the code:

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Answer 1

srand ( time(NULL) ); is used to seed the pseudo-random number generator. time() having a granularity of 1 second, if you seed the PNRG every time you call the roll_a_dice() function, for all the calls made within the granularity period, rand() will end up returning the same random number.

Move the srand ( time(NULL) ); out of the roll_a_dice() function, call that only once in main().