c - I want to be sure if there is at least one 'G' between every '$' and 'T'

Question

I want to write a Function with 1 argument, a string of characters [including $ (money), T (thief), G (guard)] and check if there is at least 1 guard (G) between every T (thief) and $ (money).

Here is my Code but it doesn't work fine for some Inputs ??

int Casino_Security (char* casino)
{

    int i = 0;
    int j = 0;
    while (*(casino + i))
    {
        if(casino[i] == 'T' || casino[i] == '$')
            for(j=i+1; j<=strlen(casino) || casino[j] == 'G'; j++)
                if(casino[j] == 'T' || casino[j] == '$') 
                    if(casino[i] != casino[j])
                        return 0;
        i++;
    }
    return 1;
}

Answer 1

In the inner forloop, the continuation test should be j<=strlen(casino) && casino[j] != 'G'; : it means breaking the loop as soon as there's a guard.