c++ array rev pointer
// CPP program to reverse array // using pointers #include <iostream> using namespace std; // Function to swap two memory contents void swap(int* a, int* b) { int temp = *a; *a = *b; *b = temp; } // Function to reverse the array through pointers void reverse(int array[], int array_size) { // pointer1 pointing at the beginning of the array int *pointer1 = array, // pointer2 pointing at end of the array *pointer2 = array + array_size - 1; while (pointer1 < pointer2) { swap(pointer1, pointer2); pointer1++; pointer2--; } } // Function to print the array void print(int* array, int array_size) { // Length pointing at end of the array int *length = array + array_size, // Position pointing to the beginning of the array *position = array; cout << "Array = "; for (position = array; position < length; position++) cout << *position << " "; } // Driver function int main() { // Array to hold the values int array[] = { 2, 4, -6, 5, 8, -1 }; cout << "Original "; print(array, 6); cout << "Reverse "; reverse(array, 6); print(array, 6); return 0; }
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