Generate 32 bits random PRIME number

[soonph87]

Hello, may I know how to generate 32-bit random prime number? Pls reply asap. thanks

[Skillless]

Pick a random value, calculate if it is a prime number, if it isnt, add 1, and repeat until you get a prime number(or until you get to the highest 32 bit value, if thats the case, go back to your value, substract 1, calculate, and repeat until you get a prime number)

Or write all prime numbers into an array, and pick a random one

[soonph87]

thanks, but how to calculate if it is a prime number?

[Skillless]

http://cplusplus.com/forum/general/3551/
http://cplusplus.com/forum/beginner/13898/
http://cplusplus.com/forum/beginner/968/