C Dynamic Array In C++ Code Example


Example 1: declare dynamic array c++

int main() {   int size;    std::cin >> size;    int *array = new int[size];    delete [] array;    return 0; }

Example 2: how to dynamically allocate an array c++

int* a = NULL;   // Pointer to int, initialize to nothing. int n;           // Size needed for array cin >> n;        // Read in the size a = new int[n];  // Allocate n ints and save ptr in a. for (int i=0; i<n; i++) {     a[i] = 0;    // Initialize all elements to zero. } . . .  // Use a as a normal array delete [] a;  // When done, free memory pointed to by a. a = NULL;     // Clear a to prevent using invalid memory reference.

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