c++3.cpp

for (int i = 0; i < 20; i ++) {   // since there are 5 values and we want 4 epochs so run for loop for 20 times
    int idx = i % 5;   //for accessing index after every epoch
    double p = b0 + b1 * x[idx];  //calculating prediction
    err = p - y[idx]; // calculating error
    b0 = b0 - alpha * err; // updating b0
    b1 = b1 - alpha * err * x[idx];// updating b1
    cout<<"B0="<<b0<<" "<<"B1="<<b1<<" "<<"error="<<err<<endl;// printing values after every updation
    error.push_back(err);
}