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                # 實驗 ```c #include <stdio.h> #include <stdlib.h> int main(int argc, char const *argv[]) { int a[3]; char b[3]; char *c = (char *) malloc(sizeof(char) * 3); char *d = "hello world"; printf("a: %p\n", a); // 棧 printf("b: %p\n", b); // 棧 printf("c: %p\n", c); // 堆 printf("d: %p\n", d); // 只讀區(常量區) printf("&d: %p\n", &d); // d 是指針,本身的地址是在棧上 printf("main: %p\n", main); // 代碼區 return 0; } ``` 輸出 ``` a: 0x7fff5e71fa8c b: 0x7fff5e71fa75 c: 0x7faa8ce00150 d: 0x1014e0f76 &d: 0x7fff5e71fa60 main: 0x1014e0e50 ``` 為什么`&d`是在棧上,而`d`是在只讀區呢? `d`里存的是字符串的首地址。具體參考[字符串的初始化原理](https://mengkang.net/993.html#blog-title-8)
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