PSI1

#include <iostream>
#include <string>
#include <ctime>
#include <cstdlib>
using namespace std;
float* NN(float *a, float W, float b) {
    float * nowa = new float[100];
    for (int i = 0; i<100; i++) {
        nowa[i] = W*a[i] + b;
    }
    return nowa;
}

float MSE(float *a, float *b){
 float wynik=0.0;
 for(int i=0;i<100;i++){
     wynik+=(a[i]-b[i])*(a[i]-b[i]);
 }
 return wynik/100.0;
}

int main()
{
     srand(time(NULL));
    //y=2x+0,5
    float x[100];
    float y[100];
    for(int i = 0; i<100; i++){
        x[i]=( float ) rand() / RAND_MAX *2;
        y[i]=2*x[i]+0.5;
    }

 float w, b;
 w = ( float )rand() / RAND_MAX *6-3;
 b = ( float )rand() / RAND_MAX *6-3;

 float * Z = NN(x, w, b);
 float mse = MSE(y, Z);
 cout <<mse<<endl;
 Z = NN(x, 2, 0.5);
 mse = MSE(y, Z);
 cout << mse;
 system("pause");
}