is_ power_ of_ 2 judge whether it is a multiple of 2

bool is_power_of_2(int n) {
    
    int i,j;
    if(n<=0)
        return false;
    if(n==1)
        return true;
    while(n!=1)
    {
    
        if(n%2==0)
            n=n/2;
        else
            return false;
    }
    return true;
}