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iosobjective-carc4random

arc4random() gives negative Number in iOS

Sometime arc4random() gives negative number also in objective C.

My code is as follow:

Try 1:

long ii = arc4random();

Try 2:

int i = arc4random();

How can I only get positivite random number?

Thank you,

Solution

  • No, it's always positive as it returns an unsigned 32-bit integer (manpage):

    u_int32_t arc4random(void);

    You are treating it as a signed integer, which is incorrect.