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                指針 語法: 數據類型*變量名稱; 語法實例 ``` int* p{}; int*pStudentId{}; ``` 兩種聲明方式 int a,*b; int*b,a; 建議的聲明方式 ``` int a; int*b; ``` ``` int a{5000}; int *p=&a; //a的地址賦給p *p=500; 給a重新賦值500 此時a=500 ``` ![](https://img.kancloud.cn/e4/8c/e48c877b8ab393a4a7b4ffec3d62ed8e_1426x660.png) 使用方法: ``` 以下代碼為地址賦值代碼: ``` int main() { int a{ 5 }; //變量賦值為5 int* p; //聲明指針 p = &a; //變量a的 地址賦值給p; std::cout << *p; //輸出p的值的地址也就是a的數值5. } ```
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