Questions tagged [randomness]

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Generate random numbers in the smart contract

I am writing smart contract and stucked on this line : int p = 0; p = (rand() % 997); This is giving error error: use of undeclared identifier 'rand' I do search and got some reference links but ...
4
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2answers
716 views

Random number generation

I know that it's not possible to have a completely 'safe' random generator on block chain. But still wondering how safe it would be if I use a combination of methods like now() and transaction_size() ...
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1answer
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Validation for contract which has data which varies

How does the EOS contract system handle data which varies? This could be from using a true random number, or receiving real-world data like a token price. Every time the contract executes, different ...
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4answers
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How can I generate random numbers inside a smart contract?

If I'm building a smart contract that requires random numbers (e.g. games of chance), how do I reliably generate randomness inside a smart contract?