С++ ЕНФ / LABA 6 / 6LB1-02

#include <iostream.h>
#include <conio.h>
#include <math.h>
#include <string.h>
#include <stdlib.h>
void main()
{
 clrscr();
 float k=0; int i=0,j=0,l=0,n=0,m=0;
 do
  {cout<<"vvedite kol-vo strok,ono dolgno bit' Z i >0 \n";
   cin>>k;}
 while(k<=0 || k-int(k)!=0);
 n=k;
 char str[10][80];
 char alf[]="ABCDEFGHIJKLMNOPQRSTWUVXYZabcdefghijklmnopqrstwuvxyz";
 int z=strlen(alf);
 int a[60];
 for(i=0;i<=z;i++) a[i]=0;
 for (m=0;m<n;m++)
 {cout<<"vv."<<(m+1)<<"  stroku \n";
  cin>>str[m];

 for(j=0;j<z;j++)
  {
   for(l=0;l<=(strlen(str[m])-1);l++)
    { if (alf[j]==str[m][l]) a[j]+=1;};
   };
  };
 clrscr();
 for(i=0;i<k;i++) cout<<str[i]<<endl;
 for(i=0;i<z/2;i++)
  {cout<<endl<<alf[i]<<" - "<<a[i]<<"   ;  "<<alf[i+26]<<" - "<<a[i+26];};
 getch();
}