problem with rand()

[Commisar Jimp]

Hey guys,
I just programed the following random number generator:

int randGen(int nMin, int nMax)
{
    int nRandNum;

    srand((unsigned)time(0));
    nRandNum = (rand() % nMax) + nMin;

    return nRandNum;
}srand

it generates a random number, but if I call it repeatedly in a for() loop, every number after the first is the same as the first, an example:

7
7
7
7
7
7

Is this because the loop runs so fast that time(0) in srand((unsigned)time(0)) doesn't change? If so, how can I work around that?

Thanks

[Disch]

Is this because the loop runs so fast that time(0) in srand((unsigned)time(0)) doesn't change?

Yes

If so, how can I work around that?

You should only be calling srand() once when the program starts. You should not be calling it every time you generate a random number. Doing so all but completely destroys the random number generation.

[Athar]

Your function doesn't work correctly, by the way, but I suppose you'll see that once you've fixed it.
There's also no need for the local variable.

[Commisar Jimp]

thanks guys, that got it; thanks for the heads up about the unnecessary variable as well.