c语言 数组合并

#include<stdio.h>
int main()
{
int m,n,i,j,k;
printf("Enter no. of elements in array1:\n");
scanf("%d",&m);
int arr[m];
printf("Enter array elements:\n");
for(i=;i<m;i++)
   scanf("%d",&arr[i]);
printf("Enter no. of elements in array2:\n");
scanf("%d",&n);
int arr1[n];
printf("Enter array elements:\n");
for(j=;j<n;j++)
   scanf("%d",&arr1[j]);
int arr2[m+n];
for(i=;i<m;i++)
   arr2[i]=arr[i];
for(j=;j<n;j++)
   arr2[m+j]=arr1[j];
printf("Array Elements after merging array:\n");
for(i=;i<m+n;i++)
    printf("%d    ",arr2[i]);
printf("\n");
}