有一个梯形,上底a,下底b,高h,使用指针进行梯形面积的计算,要求(1)顺序...答:include<iostream> using namespace std;void area(double *s, double a, double b, double h){ s = (a+b)*h/2;} int main(){ double a, b, h;double s;cin >> a >> b >>h;area(&s, a, b, h);cout << s << endl;return 0;} ...