創建x個陣列

Question

可以說我有下面這個。

int arrays = 0; 

cin >> arrays ; 

for(int i = 0; i < arrays ; i++) 
{ 
     ????? Not sure what to do here. 
} 

而且我想創建x個用戶輸入的39個元素（40）的數組。我將如何創建這個forloop來創建4個數組？例如，它將使array1array2array3array4

Answer 1

int arrays = 0; 

cin >> arrays ; 

int *ptr = new int [arrays]; //Make sure to validate arrays against errors 
          //and don't forget to de-allocate using delete[] when done 

for(int i = 0; i < arrays ; i++) 
{ 
     ptr[i] = i; 
}