How I can generate different random numbers in one moment in c++?

How I can generate different random numbers in one moment in c++?

N开发者_运维知识库ow I use

while ( flag )
{
   ....
   srand( time( NULL) ); 
   int rndSig = rand() % 10 + 1;
   ......
}

But at one moment all numbers are equal. How I can generate different numbers in while loop?

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Move the srand outside of the while loop. You only need to call it once, rand() keeps static state.

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You don't seed the random generator directly before you use it. Just use srand once before the loop.

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Like this :

srand( time( NULL) ); 
while ( flag )
{
   ....
   int rndSig = rand() % 10 + 1;
   ......
}

If you need different distribution, or better randomness, you need to use a library.