I'm stuck on this function that is related to the game of life. It is supposed to randomly populate the game board with '*'s based on the user input (what percentage they want to be '*'). this is what I have so far, but it crashes when I try to run it. I tried debugging it, and found that there is something wrong in the second if statement in my lifePopulateRandom function. Any help is really appreciated:

```
static int nrow, ncol, ntot;
static int nrow_t, ncol_t, ntot_t;
static int alive_in_grid=0;
static char** g0=NULL;
static char** g1=NULL;
#define Current(I, J) g_current[(I) + 1][(J) + 1]
#define Next(I, J) g_next[(I) + 1][(J) + 1]
void lifePopulateRandom(float percent) {
int i, j, location, num_to_insert;
if (percent < 0.0 || percent > 100.0) {
printf("Invalid percentage: %f.\n", percent);
return;
}
percent /= 100.0;
// Initialize both grids to all blank spaces.
for (i = 0; i < ntot_t; i++) {
g0[i] = ' ';
g1[i] = ' ';
}
alive_in_grid = 0;
num_to_insert = (int) (percent * ntot);
while (alive_in_grid < num_to_insert) {
location = rand() % ntot;
j = location % ncol;
i = location / ncol;
if (Current(i, j) == ' ') {
Current(i, j) = '*';
printf ("\nbye\n");
alive_in_grid++;
}
}
return;
} // lifePopulateRandom()
```

and this is how i initialized the grid:

```
void lifeInit(int the_nrow, int the_ncol) {
int i;
nrow = the_nrow;
ncol = the_ncol;
ntot = nrow * ncol;
nrow_t = nrow + 2;
ncol_t = ncol + 2;
ntot_t = nrow_t * ncol_t;
// Free memory if previously initialized.
if (g0 != NULL)
free(g0);
if (g1 != NULL)
free(g1);
g0 = (char**)malloc(ntot_t * sizeof(char*));
g1 = (char**)malloc(ntot_t * sizeof(char*));
if (g0 == NULL || g1 == NULL) {
printf("Initialization memory allocation failed. Terminating...\n");
exit(-1);
}
// Initialize both grids to all blank spaces.
for (i = 0; i < ntot_t; i++) {
g0[i] = ' ';
g1[i] = ' ';
}
g_current = g0;
g_next = g1;
return;
} // lifeInit()
```

thanks.