int switch_prob(int x)
{
    int result = x;

    switch(x-50)
    {
        case 0:
            result<<=2;
            break;

        case 1:
            result+=10;
            break;

        case 2:
            result<<=2;
            break;

        case 3:
            result>>=2;
            break;

        case 4:
            result*=3;
            break;

        case 5:
            result*=result;
            break;

        default:
            result+=10;
            break;
    }

    return result;
}

int main(void)
{
    switch_prob(50);
}