Typing a reverse number program in C.Compiles successfully but dosen't give proper output.What's wrong?

include

int main()

{

int i,j,temp,n,z,x;

printf("\n Enter the length of the array \n ");

scanf("%d",&n);

int a[n];

printf("\n Enter the elements for the array \n");

for(z=0;z

         {

scanf("%d", &a[z]); // Entering elements for the array

           }


    for(j=0;j<n-1;j++) // for loop for n-1 iterations

 {

for(i=0;i

{

temp=a[i];

a[i]=a[i++];

a[i++]=temp;

}

}

printf("\n The reversed number is as follows \n");

           for(z=0;z<n;z++)

{

printf("%d",a[z]);

}

}