> For the complete documentation index, see [llms.txt](https://fashaun.gitbook.io/dev-c/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://fashaun.gitbook.io/dev-c/pointer/pointer-to-pointer.md).

# Pointer to Pointer

\#Ptr to Ptr

就還是指標, 所以就是用來儲存指標(儲存某變數的記憶體 addr)的 addr

int \*\*ptr = \&ptr; // 只是宣告

printf("\*\*ptr = %d\n, \*\*ptr);

printf("\*\*ptr = %p\n, \*ptr);

printf("\*\*ptr = %p\n, ptr);

\*ptr: 指進去一層

\*\*ptr : 指進去再指進去


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