C Program on Merging and Sorting

  #include<stdio.h>
  #define MAX 50
  void mergeSort(int arr[],int low,int mid,int high);
  void partition(int arr[],int low,int high);
  int main()
  {
     int merge[MAX],i,n;
     printf("Enter the total number of elements: ");
     scanf("%d",&n);
     printf("Enter the elements which to be sort: ");
     for(i=0;i<n;i++)
     {
       scanf("%d",&merge[i]);
    
     }
     partition(merge,0,n-1);
     printf("After merge sorting elements are: ");
     for(i=0;i<n;i++)
    {
       printf("%d ",merge[i]);
     }
     return 0;
  }
   void partition(int arr[],int low,int high)
  {
     int mid;
     if(low<high)
    {
       mid=(low+high)/2;
       partition(arr,low,mid);
       partition(arr,mid+1,high);
       mergeSort(arr,low,mid,high);
     }
   }
  void mergeSort(int arr[],int low,int mid,int high)
  {
     int i,m,k,l,temp[MAX];
     l=low;
     i=low;
     m=mid+1;
     while((l<=mid)&&(m<=high))
     {
      if(arr[l]<=arr[m])
       {
         temp[i]=arr[l];
         l++;
       }
      else
       {
         temp[i]=arr[m];
         m++;
       }

       i++;
     }
     if(l>mid)
     {
       for(k=m;k<=high;k++)
       {
         temp[i]=arr[k];
         i++;
       }
     }
     else
     {
       for(k=l;k<=mid;k++)
       {
         temp[i]=arr[k];
         i++;
       }
     }
     for(k=low;k<=high;k++)
     {
         arr[k]=temp[k];
     }
   }