پاسخ سوالات برنامه نویسی زبان c++1

#include <iostream.h>
#include <conio.h>
#include <stdio.h>
void main()
{
   int n,k ,a[100],i,temp;
   clrscr();
   cin>> n >>k;
   for (i=0;i<n;i++)
      cin>>a[i];
   for (i=0;i<n;i++)
   {
      temp = a[i];
      while( a[i]>0)
      {
         if (a[i]%k) break;
         a[i]/=k;
      }
   if ( a[i]==1 && temp!=1 ) cout<< temp <<"\t";
   }
   getch();
}

#include <iostream.h>
#include <conio.h>
#include <stdio.h>
void main()
{
   int n, s=0 ,i,k;
   clrscr();
   cin>>n;
   for (i=0 ; i<n ;i++)
   {
      cin>>k;
      s=s*10+k;
   }
   if (s%11==0)
      cout<<"YES";
   else
      cout<<"NO";
   getch();
}

#include <iostream.h>
#include <conio.h>
#include <stdio.h>
void main()
{
   int n, s=0 ,i,k;
   clrscr();
   cin>>n;
   for (i=0;i<n;i++)
   {
      cin >> k;
      if ( i%2== 0)
         s-=k;
      else
         s+=k;
   }
   if ( s%11 == 0)
      cout<<"YES";
   else
      cout<<"NO";
   getch();
}

#include <iostream.h>
#include <conio.h>
#include <stdio.h>
void main()
{
   int n,s;
   clrscr();
   cin >> n;
   while (n!=1)
   {
      if (n%2==0)
         n=n/2;
      else
         n=n*3+1;
      cout<<n<<"\t";
   }
   getch();
}

#include <iostream.h>
#include <conio.h>
#include <stdio.h>
void main()
{
   int n,i,j, temp , a[100];
   long int sum=0;
   clrscr();
   cin>>n;
   for (i=0;i<n;i++)
      cin>>a[i];
   for (i=0;i<n;i++)
      for(j=0;j<i;j++)
         if (a[i]<=a[j])
         {
            temp=a[i];
            a[i]=a[j];
            a[j]=temp;
         }
   for (i=0;i<n;i++)
      sum = sum * 10 + a[i];
   cout<<sum;
   getch();
}

#include <iostream.h>
#include <conio.h>
void main()
{
   int n,i,j, a[100] , rep=0;
   clrscr();
   cin>>n;
   for (i=0;i<n;i++)
      cin>>a[i];
   for (i=0;i<n;i++)
   {
      rep=0;
      for (j=0; j<n; j++)
         if (a[i] == a[j]) rep++;
      if ( rep>n/2 ) break;
   }
   if (rep>n/2)
      cout<<a[i];
   else
      cout<<"Not Exist";
   getch();
}

#include <iostream.h>
#include <conio.h>
int sum1 (int a);
int sum[10] = {6,2,5,5,4,5,6,3,7,6};
void main()
{
   int a,b,i, max=1, num_max;
   clrscr();
   cin>> a >>b;
   for (i=a;i<b;i++)
   {
      if(sum1(i) > max)
      {
         max=sum1(i);
         num_max=i;
      }
   }
   cout<< max <<"\t"<<num_max;
   getch();
   }
   int sum1(int a)
   {
      int r=0;
      while(a>0)
      {
         r=r+sum[(a%10)];
         a=a/10;
      }
   return r;
}