how to dynamically allocate an array c 2b 2b

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Matteo
07 Aug 2019
1int main()
2{
3  int size;
4
5  std::cin >> size;
6
7  int *array = new int[size];
8
9  delete [] array;
10
11  return 0;
12}
Lilli
19 Jul 2017
1int* a = NULL;   // Pointer to int, initialize to nothing.
2int n;           // Size needed for array
3cin >> n;        // Read in the size
4a = new int[n];  // Allocate n ints and save ptr in a.
5for (int i=0; i<n; i++) {
6    a[i] = 0;    // Initialize all elements to zero.
7}
8. . .  // Use a as a normal array
9delete [] a;  // When done, free memory pointed to by a.
10a = NULL;     // Clear a to prevent using invalid memory reference.
11
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