```
#include<stdio.h>
int arr[20];
int main()
{
int n,i;
printf("Enter the size of array\n");
scanf("%d",&n);
printf("Enter the elements:");
for(i=0; i<n; i++)
scanf("%d",&arr[i]);
merge_sort(arr,0,n-1);
printf("Sorted array:");
for(i=0; i<n; i++)
printf(" \n %d",arr[i]);
return 0;
}
int merge_sort(int arr[],int low,int high)
{
int mid;
if(low<high) {
mid=(low+high)/2;
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];
int n1,n2,i,j,k;
n1=m-l+1;
n2=h-m;
for(i=0; i<n1; i++)
{
arr1[i]=arr[l+i];
}
for(j=0; j<n2; j++)
{
arr2[j]=arr[m+j+1];
}
arr1[i]=9999;
arr2[j]=9999;
i=0;
j=0;
for(k=l; k<=h; k++) {
if(arr1[i]<=arr2[j])
arr[k]=arr1[i++];
else
arr[k]=arr2[j++];
}
return 0;
}
```

in this my doubt is here

```
int merge_sort(int arr[],int low,int high)
{
int mid;
if(low<high) {
mid=(low+high)/2;
merge_sort(arr,low,mid);
merge_sort(arr,mid+1,high);
// Combine
merge(arr,low,mid,high);
}
return 0;
}
```

what will be the value of high???//

for example take this output as scenario

size of array is :5

elements :10,50,2,3,1

now my value of n is 5 and so after the merge_sort function the values will low=0 and high=4 after these two function

```
merge_sort(arr,low,mid);
merge_sort(arr,mid+1,high);
```

what will be the value of mid,low,high????i am confused i dont understand pleas help at this point