简单示例¶

void swap(int *a, int *b) {
    int t = *a;
    *a = *b;
    *b = t;
}

int x = 1, y = 2;
swap(&x, &y);  // x=2, y=1

int arr[] = {1, 2, 3, 4, 5};
for (int *p = arr; p < arr + 5; p++) {
    printf("%d ", *p);
}