多层前馈神经网络解决异或问题

老师给的课件算错了==

验证了一下

#include<iostream>
#include<string.h>
//前馈神经网络解决异或问题
using namespace std;
int sgn(float x){
    if(x<0) {return 0;}
    else return 1;
}

int main(){
    //int x;
    //cin>> x;
    //cout <<sgn(x)<<endl;
    int a,b;//两个输入
    float p,q,t;//p=u11,q=u12,t=2
    cin>>a;
    cin>>b;
    p = a*1+(-1)*b-0.5;
    q = a*(-1)+1*b-0.5;
    cout<<p<<endl;
    cout<<q<<endl;
    //cout<<sgn(p)<<endl;
    //cout<<sgn(q)<<endl;
    t=sgn(p)+sgn(q)-0.5;
    cout<<t<<endl;
    cout<<sgn(t)<<endl;

return 0;
}