C＋＋编写“有理数分式方程”

#include<iostream.h>
class FC
{
private:
int a,b,c,d,e,f;
public:
FC(int A,int B,int C,int D,int E,int F)
{
a=A;
b=B;
c=C;
d=D;
e=E;
f=F;
}
void jisuan()
{
int x,y;
x=(d*e-f*c)*b;
y=f*d*a;
cout<<"x="<<x/work(x,y)<<"/"<<y/work(x,y)<<endl;
}
int work(int fz,int fm)
{
int z=0;
int max=(fz>fm)?fz:fm;
for(int i=1;i<max;i++)
{
if(fz%i==0&&fm%i==0)
z=i;
}
return z;
}
};
void main()
{
FC F(3,4,4,5,7,8);
F.jisuan();
}