Hello, I am actually doing a merge sort assignment and I am stuck at the code and I don't know where am I making error, kindly help me out.

/**
  * Divide  : Divide the n-element array into two n/2-element
  *           sub-arrays
  * Conquer : Sort the two sub-arrays recursively using
  *           merge sort
  * Combine : Merge the two sorted subsequences to form the
  *           sorted array
  **/

#include<stdio.h>

int arr[20];       // array to be sorted

int main()
{

  int n,i;
  clrscr();
  printf("Enter the size of array\n");  // input the elements
  scanf("%d",&n);
  printf("Enter the elements:");
  for(i=0; i<n; i++)
    scanf("%d",&arr[i]);

  merge_sort(arr,0,n-1);  // sort the array

  printf("Sorted array:");  // print sorted array
  for(i=0; i<n; i++)
    printf("%d",arr[i]);
   getch();
  return 0;
}

int merge_sort(int arr[],int low,int high)
{
  int mid; int i;
  if(low<high) {

    mid=(low+high)/2;
    // Divide and Conquer
    merge_sort(arr,low,mid);
    merge_sort(arr,mid+1,high);
    // Combine


    merge(arr,low,mid,high);
  }

  return 0;
}

int merge(int arr[],int l,int m,int h)
{
  int arr1[10],arr2[10];  // Two temporary arrays to
  //hold the two arrays to be merged
  int n1,n2,i,j,k,z;

i=0;j=0;

for(z=l;z<=m;z++)
{
arr1[i]=arr[z];
i++;
}
for(z=m+1;z<=h;z++)
{
arr2[j]=arr[z];
j++;
}




  n1=i;
  n2=j;
  i=0;
  j=0;
  for(k=l; k<=h; k++)
  { //process of combining two sorted arrays

    if(i<n1 && j<n2)
    {
if(arr1[i]<=arr2[j])
      arr[k]=arr1[i++];
else
     arr[k]=arr2[j++];
     }
     else if(i>=n1)
     {
  arr[k]=arr[j++];
     }
     else
     {
arr[k]=arr[i++];
     }


  }

  return 0;
}



However, this is bad practice.
You shouldn't declare cha as int, if you actually save and test for characters. Use the type char.
The use of in.nextInt() will crash the program if the user enters a character. The correct approach is to read the line into a String instead.

yup, now i get it, actually I am doing a java self study so I haven't tried different things, i will now in other classes. Thanks

There is no possibility that cha2 will change its value.
Note that you put a ; there at the end, that ; is the single action you are doing in the loop. Remove the semicolon and you are fine.
Also: That's a reason not to omit the curly braces. Things like these shouldn't happen if you always add them. At least in Java it is convention that you always put braces.

what I wanted to do was that if user inputs 1 the loop should terminate.
System.out.println("Wrong Input \n\n"       
+ "Enter 1 To Terminate or any other digit to Continue?");                           
cha2=in.nextInt();

I watched the video and done a brief search in le internets. I can't find any legitimate proof that anonyfag is actually doing this.

Some facts some theories don't need to be proved, we just have to put our faith in it. And well anon"fag" isn't an organization with leaders and managers but a bunch of people who are good at redirecting the flow.

Anonymous took down quite many twitter and fb accounts of people who were recruiting and brainwashing young people to go to syria. They further stated that

"The above video explains the attack was coordinated by “Muslims, Christians, Jews” alike. They are “hackers, crackers, Hacktivist, phishers, agents, spies, or just the guy next door… students, administrators, workers, clerks, unemployed, rich, poor.” They are also “young, or old, gay or straight… from all races, countries, religions, and ethnicity. United as one, divided by zero.”"

Massive Respect for them

http://anonhq.com/anonymous-hacktivists-strike-blow-isis/

Oh my god - you need to work on your coding style more than anything, bro. Indentation sucks, extra spaces suck, formatting sucks as well.

I will

Don't know if posting links is allowed or not but


www.youtube.com/watch?v=HjRI2AsF3h0

I think that explains it, worth listening.