пишу нейронную сеть вопрос по циклу

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <math.h>
#include <conio.h>
#pragma hdrstop
  void main()
  { int x[20]  ;
    int y[10];
    int in[20]={1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1};
    double v[20]={1.5,1.6,1.5,1.5,0.6,0.5,0.5,0.8,0.5,0.5,0.2,0.5,0.7,0.6,0.8,0.9,0.3,0.5,0.33,0.23};
    double w[20]={0.1,0.01,0.2,0.02,0.3,0.001,0.2,0.002,0.003,0.1,0.2,0.4,0.004,0.2,0.022,0.033,0.022,0.04,0.05,0.05};
    int save[20];
   int i,j;
   double limit1[20]={1.1,1.2,0.5,1.7,2.1,1.8,0.8,0.9,1.0,1.1,1.9,1.3,1.4,1.5,1.6,1.7,1.8,1.9,2.0,2.3};
double   limit2[10]={1.1,1.4,1.3,0.7,0.6,0.9,0.1,1.3,1.4,1.33};
    double S=0;

   for(i=0;i<20;i++)
    {S=S+w[i]*in[i];}
    printf("%lf ",S);
    printf("n");
     for(j=0;j<20;j++)
   {if(S>limit1[j])
   x[j]=1;
   else
   x[j]=0;}

   for(i=0;i<20;i++)
   printf("%d ",x[i]);
   printf("n");


   for (i=0,j=0;i<10,j<20;i++,j++)
    {if(v[j]*x[j]+v[j+1]*x[j+1]>limit2[i])
      {y[i]=1;printf("y%d =%d ",i,y[i]); v[j]=v[j]+2;v[j+1]=v[j+1]+2;}
    else {y[i]=0;printf("y%d=%d ",i,y[i]);} }
  for(i=0;i<10;i++)
   { save[i]=y[i];}
        printf("n");

                    for(j=0;j<20;j++)
   for (i=0;i<10;i++)
    {if(v[j]*x[j]+v[j+1]*x[j+1]>limit2[i])
     {y[i]=1;v[j]=v[j]+2;v[j+1]=v[j+1]+2;}
    else y[i]=0;}
         for(i=0;i<10;i++)
   { save[i+10]=y[i];}

   for(i=0;i<20;i++)
   printf("%d ",save[i]);

   printf("n");
            S=0;
          for(i=0;i<20;i++)
    {S=S+w[i]*save[i];}
    printf("%lf ",S);
    printf("n");
     for(j=0;j<20;j++)
   {if(S>limit1[j])
   x[j]=1;
   else
   x[j]=0;}
   printf("x ");
   for(i=0;i<20;i++)
   printf(" %d ",x[i]);
   printf("n");

           for(j=0;j<20;j++)
   for (i=0;i<10;i++)
    {if(v[j]*x[j]+v[j+1]*x[j+1]>limit2[i])
      {y[i]=1;v[j]=v[j]+1;v[j+1]=v[j+1]+1;}
    else y[i]=0;}
  for(i=0;i<10;i++)
   { save[i]=y[i];}


                    for(j=0;j<20;j++)
   for (i=0;i<10;i++)
    {if(v[j]*x[j]+v[j+1]*x[j+1]>limit2[i])
     {y[i]=1;v[j]=v[j]+1;v[j+1]=v[j+1]+1;}
    else y[i]=0;}
         for(i=0;i<10;i++)
   { save[i+10]=y[i];}

   for(i=0;i<20;i++)
   printf("%d ",y[i]);

   printf("n");
   getch();}