C++ Random Function making smiley faces

I am working on a battleship c++ program. I am testing out how I want to go about setting the ships and the water. I have an array and I create a random number for each int inside the array using a for loop. The random number it generates is a smiley face.

#include <iostream>
#include <cstdlib>
using namespace std;

int main(int argc, char *argv[]) {
    int picks = 0;
    char arena[25] = {};
    for(int i = 0; i != 24; i++) {
        srand(time(0));
        picks = rand() % 3;
        arena[i] = picks;
    }
    for(int i = 0; i != 24; i++)
    cout << arena[i];
    cout << endl;
    for(int i = 0; i != 24; i++) {
        if(arena[i] = 1)
            cout << "~";
        else if(arena[i] = 2)
            cout << "~";
        else if(arena[i] = 3)
            cout << "#";
    }
    cout << endl;

    system("PAUSE");
}