Thread: code.exe has stopped working

Dear all, I am new here and I am new to work with C/C++. I am posting my code here. it has no error. but showing code.exe has stopped working. I am using code blocks. I will be really grateful if anyone can give any solution. Thanks in advance.

Code:

#include<iostream>
#include<string>
#include<fstream>


using namespace std;


const int t=2;//12;
const int n=6;//195;
const int l=3;
const int k=4;//n-l+1//need to change
int i=1;
//int j;


int *nextvertex(int s[])
{
    int j;
    if(i<l)
    {
       s[i+1] = 1;
       i=i+1;
       return s;
    }
    else
    {
       for(j=l;j>=1;j--)
       {
           if(s[j]<k)
           {
               s[j]=s[j]+1;
               i=j;
               return s;
           }
        }
    }
    i=0;
    return s;
}




int *bypass(int s[])
{   int j;
    for(j=i;j>=1;j--)
    {
        if(s[j]<k)
        {
            s[j]=s[j]+1;
            i=j;
            return s;
        }
    }
    i=0;
    return s;
}
int totaldistance(int prefix[], int dna[][n])
{
//    int s[5]={1,1,1,1,1};
    int sum=0;
  //int s1=1;
  //s=&s1;
  int ls;
  ls=sizeof(prefix);
  cout<<"ls="<<ls<<"\n";
    int x,y,a,td=0;
    for(x=0;x<t;x++)
    {   int dist=0;
        for(y=0;y<n-ls+1;y++)
        {
           int a=0, c=0;
           for(int z=y;z<y+ls;z++)
           {
                int w=dna[x][z];
                int b=prefix[a];
                if(dna[x][z]!=prefix[a])
                {
                    c+=1;
                }
                a++;
          /*if(s[0]!=dna[x][y])
            {
                a++;
            }
            cout<<a<<" ";
            td=td+a;*/
           }
           if(c<dist||y==0)
           {
               dist=c;
           }
        }
        sum=sum+dist;
    }
    cout<<"\n";
    cout<<"total distance:"<<sum<<"\n";
    return sum;


}


int *branchandboundmediansearch(int dna[][n])
{
   int s1=1;
    int *s=new int [l];
    s=&s1;
   // int *s=new int [l];
    int *prefix=new int [i];
   // prefix=new int[i];


    int word[8];
    int bestword[8];
    int bestdis=16;//96;
    int j, optdis, x, y;
    while(i>0)
    {
        if(i<l)


        {
            for(x=0;x<i;x++)
            {
                prefix[x]=s[x];
                cout<<"prefix:"<<prefix[x];
            }
            cout<<"\n";
            optdis= totaldistance(prefix,dna);
            if(optdis>bestdis)
            {
                s=bypass(s);
            }
            else
            {
                s=nextvertex(s);
            }


        }
        else
        {
            for(x=0;x<l;x++)
            {
                word[x]=s[x];
            }
            if(totaldistance(word,dna)<bestdis)
            {
                bestdis=totaldistance(word,dna);
                for(x=0;x<l;x++)
                {
                    bestword[x]=word[x];
                }
            }
            s=nextvertex(s);
        }
    }
    return bestword;
    delete [] s;
    delete [] prefix;
}


main()
{
    int x,y,opd;
    string str;
    int arr[12], dna[t][n];
   // int *l_mer1[8];
   int *l_mer;
   // int *l_mer=l_mer1;
   // char finall_mer1[8];
   // char finall_mer=finall_mer1;
    //char *finall_mer=finall_mer1;
   // int s1=1;
    //int *s=new int [l];
   //=new int[l];
   // s=&s1;
  /*  for(x=0;x<l;x++)
    {
        cout<<"s:"<<s[x]<<" ";
    }
    cout<<"\n";*/
   //out<<s;
   //nt *s2;
   char finall_mer[l];
  //2=nextvertex(s);
 //cout<<s2;
  /* ifstream myfile ("E:/Codeblocks codes/C++ codes/bbms/input.txt");
    if (myfile.is_open())
    {
        while ( !myfile.eof() )
        {
            myfile>>str;
            cout << str << "\n";
        }
        myfile.close();
    }*/


    cin>>str;
   // int s[11]={1,1,1,1,1,1,1,1,1,1,1};
   // cout<<str;
    //strcpy(str1,str);
    for(x=0;x<12;x++)
    {
        if(str[x]=='A')
        {
            arr[x]=1;
            //cout<<arr[i]<<" ";
        }
        else if(str[x]=='C')
        {
            arr[x]=2;
            //cout<<arr[i]<<" ";
        }
        else if(str[x]=='G')
        {
            arr[x]=3;
            //cout<<arr[i]<<" ";
        }
        else
        {
            arr[x]=4;
            //cout<<arr[i]<<" ";
        }
    }
   cout<<"\n ";
    for(x=0;x<12;x++)
    {
        cout<<arr[x];
    }
    cout<<"\n";
    int a=0;
    while(a<12)//a: for counting 1D array
    {
        for(x=0;x<t;x++)
        {
            for(y=0;y<n;y++)
            {
                dna[x][y]=arr[a];
                a++;
            }
        }
    }
    for(x=0;x<t;x++)
        {
            for(y=0;y<n;y++)
            {
                cout<<dna[x][y]<<" ";
                //a++;
            }
            cout<<"\n";
        }




//   opd=totaldistance(s,dna);
   //cout<<"\n"<<opd;
  //s=nextvertex(s);
  //cout<<s;
    l_mer=branchandboundmediansearch(dna);
    for(x=0;x<l;x++)
    {
        if(l_mer[x]==1)
        {
            finall_mer[x]='A';
            cout<<finall_mer[x]<<"\n";
            //cout<<arr[i]<<" ";
        }
        else if(l_mer[x]==2)
        {
            finall_mer[x]='C';
            cout<<finall_mer[x]<<"\n";
            //cout<<arr[i]<<" ";
        }
        else if(l_mer[x]==3)
        {
            finall_mer[x]='G';
            cout<<finall_mer[x]<<"\n";
            //cout<<arr[i]<<" ";
        }
        else
        {
            finall_mer[x]='T';
            cout<<finall_mer[x]<<"\n";
            //cout<<arr[i]<<" ";
        }
    }
   // cout<<"\n"<<finall_mer;*/


//   delete [] prefix;


}