每道题的答案代码 有大神出来吗

int Multiply(int num1, int num2) { return num1 * num2; }
int Multiply(int num1, int num2, int num3) { return num1 * num2 * num3; }
double Multiply(double num1, double num2) { return num1 * num2; }
int main()
{
printf("%d\n", Multiply(2, 3));
printf("%d\n", Multiply(2, 3, 4));
printf("%lf\n", Multiply(1.2, 2.4));
}