#include <iostream>
#include <cmath>

using namespace std;
void computeTriangle(float &a,float &p,float i,float j,float m);

void main()
{
    int x = 0;
    int y = 0;
    int z = 0;

    cout<<"请输入三角形的三边长:"<<endl;
    cin>>x>>y>>z;

    cout<<computeTriangle(float &a,float &p,float x,float y,float z)<<endl;
}
void computeTriangle(float &a,float &p,float i,float j,float m)
{

    if(i+j<m||i+m<j||j+m<i)
        cout<<"不能构成三角形"<<endl;
    else
    {
        a = (1/4) * sqrt((i+j+m)*(i+j-m)*(i+m-j)*(j+m-i));
        p = i + j + m;

        cout<<"面积a="<<a<<"周长p="<<p<<endl;
    }
}
哪里有问题呢