C 初学者，指针和取消引用

Question

我试图理解 C 中的整个指针和取消引用。我几乎明白了，但遇到了非常简单的代码，结果我不明白:

char *ptr = "Characters";
char val = *ptr;
char *chrptr = &val;
printf("Value under character pointer is: %p / %c\n", &val, val);
printf("Dereferenced character pointer: %p\n", chrptr);
printf("Array pointer: %p\n", ptr);

现在，正如我在执行前所理解的那样，ptr == chrptr == &val，但实际上 ptr != chrptr == &val。这是为什么？

Answer 1

char *ptr = "Characters"; // returns a pointer to 'C'
char val = *ptr; // dereferences the pointer to 'C' and copies 'C' into val

val有自己的内存位置，所以val的地址会不同

 char *chrptr = &val; //chptr points to val. A different memory location.