Too many arguments to function rand

[lukecplusplus]

I really am in the dark on this one. This is a function from my "zombie rabbits " program. I am trying to make a function that randomizes the chance of a baby being male female or zombie. I tried to use the same number generation code I used for a guess my number game and it's not working. Any and all help is appreciated.

The error message: In function 'void repopulate()':
82:26: error: too many arguments to function 'int rand()'

{
    int babies;
    babies = 1;
    while(babies != 0){
    int rabbitsex;
    srand( time(0));
    rabbitsex = rand(time)%20+1;
        switch (rabbitsex)
        {
        case 1:
        case 2:
        case 3:
        case 4:
        case 5:
        case 7:
        case 8:
        case 9:
        case 10:
         m++;
         break;
        case 11:
        case 12:
        case 13:
        case 14:
        case 15:
        case 16:
        case 17:
        case 18:
        case 19:
         f++;
         break;
        case 20:
         z++;
         break;
        }
    babies--;
    }
}

[mutexe]

http://www.cplusplus.com/reference/cstdlib/rand/

rand takes ZERO parameters and you're passing in time for some reason.

[Ganado]

The random number generator that rand() uses has already been seeded with the current time on line 6.
rand(), as show in http://www.cplusplus.com/reference/cstdlib/rand/, takes in zero parameters and generates a random integer.

Doing int a = rand()%20; will make a be a random number in range [0, 19].

[lukecplusplus]

Thank you for the quick response. It works now. :)