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                ### *p++ 與(*P)++ 不同 *p++ 是增加了一個地址。(*P)++ 是增加了一個變量加+1 ``` *p++ *p //此時的指針地址增加了一位 ``` ``` (*p)++ *p //此時變量數值增加了1 ``` 多級指針嵌套 代碼: ``` int main() { int a[]{ 1001, 1002, 1003, 1004, 1005 }; int *ppr = { &a[0] }; int** pptr = { &ppr }; *pptr = &a[1]; std::cout << **pptr; int*** pptrr = { &pptr }; **pptrr = &a[2]; std::cout << ***pptrr; } ``` ## 代碼中 **pptr 其實是*ppr的指針地址,所有可以*pptr這樣賦值,賦的值也是*ppr的值。 ## ## 必須這樣寫不然會報錯。 下圖為理解示意圖 ![](https://img.kancloud.cn/1e/0b/1e0bd016aad4cc280a7fb90a9279895e_913x335.png)
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