correct way to change values of c pointers

Question

Sorry, another C pointer question.. I have a function func() that sorts an array, then get the largest and smallest integers. I\'m trying to put them inside pointer variables in

Answer 1

Your pointers are not initialized. You have two solutions:

• use integers in main function (and eventually, although useless, make pointers point to them in the same function);
• dynamically allocate memory for your pointer.

Easiest code:

#include 

int main(void)
{
    int arr[] = {1, 2, 9, 3, 58, 21, 4};
    int s, l;
    int size = 7;
    func(arr, &s, &l, size);
    printf("%d %d\n", l, s);
} 

In the current code, you don't need to make l and s point to the case of the array. So, as Dan F stated, you can just do integer's assignment.

void func(int arr[], int *s, int *l, int n)
{
    int i = 1;
    for(; i < n; i++){
        int temp = arr[i];
        int n = i;
        while( n > 0 && arr[n-1] > temp){
            arr[n] = arr[n-1];
            n--;
        }
        arr[n] = temp;
    }
    *l = arr[n-1];
    *s = arr[0];
    printf("%d %d\n", *l, *s);
}