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Merge sort

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Yuvikiit

Hello,
Actually I am learning DS a subject in my semester and have doubt in the following code of the merge sort, though by dry run I am not able to find any error, I am not getting why my array is not getting sorted.
I hope someone can help me with this.
The code is in given below.
Thanks in advance
Regards
Yuvraj.

#include<stdio.h> #include<stdlib.h> void merge(int *l,int *r,int *A,int nl,int nr) { int i=0,j=0,k=0; while(i<nl&&j<nr) { if(*(l+i)<=*(r+j)) { *(A+k)=*(l+i); k++; i++; } else { *(A+k)=*(r+j); k++; j++; } } while(i<nl) { printf("%d =##\n",*(l+i)); *(A+k)=*(l+i); i++; k++; } while(j<nr) { printf("%d =**\n",*(r+j)); *(A+k)=*(r+j); j++; k++; } } void mergesort(int *A,int n) { if(n<2) return; int mid=n/2; int *left=malloc(sizeof(int)*(n-mid)); int *right=malloc(sizeof(int)*(mid)); int i; for(i=0;i<(n-mid);i++) *(left+i)=*(A+i); for(i=(n-mid);i<n;i++) *(right+i)=*(A+i); mergesort(left,(n-mid)); mergesort(right,mid); merge(left,right,A,(n-mid),mid); } void disp(int *arr,int n) { int i=0; for(i=0;i<n;i++) printf("%d ",*(arr+i)); printf("\n"); } int main() { int i,n,*A; printf("Please enter the no. of elements\n"); scanf("%d",&n); A=(int *)(malloc(sizeof(int)*n)); printf("Please enter the elements of the array\n"); for(i=0;i<n;i++) scanf("%d",A+i); printf("The array is \n"); disp(A,n); mergesort(A,n); printf("The sorted array is \n"); disp(A,n); return 0; }
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Yuvikiit