Answer to Question #155861 in C++ for zain ul abdeen

Question

Write a program to copy the contents of one array into another in the reverse order.

Answer 1

/*

Program workflow:

1) User enters length of array

2) User enters elements of array, delimited by space

3) Program creates reversed array, using function reverse()

4) Program outputs reversed array

*/

#include <iostream>

#include <string>

template<class T>

T * reverse(T * array, int length) {

 T * result = new T[length];

 for (int i = 0; i < length; ++i) {

   // fill reversed array with original array elements, starting from the end of original array

   result[i] = array[length - 1 - i];

 }

 return result;

}

int main() {

 std::cout << "Enter array length: ";

 int length;

 std::cin >> length;

 std::string * array = new std::string[length];

 std::cout << "Enter array elements, delimited by space: ";

 for (int i = 0; i < length; ++i) {

   std::string str;

   std::cin >> str;

   array[i] = str;

 }

 // reversed array

 std::string * reversed = reverse(array, length);

 std::cout << "Reversed array: ";

 for (int i = 0; i < length; ++i) {

   std::cout << reversed[i];

   if (i < length - 1) {

     std::cout << " ";

   }

 }

 std::cout << "\n";

 delete[] array;

 delete[] reversed;

 return 0;

}