Question

I have a function to reverse an array and I think there are some issues with the same. Please guide me in the right path to get this sorted out.

Function:

void reversearr (int arr[], int arrlen)

    {
        int a, b, arrtemp[arrlen];
        b=arrlen;
        for (a=0; a<=arrlen; a++)
        {
            arr[a] = arrtemp[b];
            b--;
        }
        printf("\nthe reversed array is");

        for(b=0; b<arrlen; b++)
        {
            printf("%d",arrtemp[b]);
        }
    }

the function is called in this way

reversearr(arr,max);

Answer 1

void reversearr (int arr[], int arrlen)
{  
    int a, tmp;
    for (a = 0; a < arrlen / 2; ++a)
    {
         tmp = arr[a];
         arr[a] = arr[arrlen - a - 1];
         arr[arrlen - a - 1] = tmp;
    }
}