Access array element by using pointer - C++ Data Type

C++ examples for Data Type:Array Pointer

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Description

Access array element by using pointer

Demo Code

#include <iostream>
using namespace std;
void zero_out_array(int *arr, int n);
int a[10] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
int main() {/*from   w ww  .jav  a2 s.com*/
   zero_out_array(a, 10);
   // Print out all the elements of the array.
   for (int i = 0; i < 10; ++i) {
      cout << a[i] << "  ";
   }
   return 0;
}
// Zero-out-array function.
// Assign 0 to all elements of an int array of size n.
void zero_out_array(int *p, int n) {
   while (n-- > 0) {  // Do n times:
      *p = 0;          //  Assign 0 to element pointed
      //    to by p.
      ++p;             //  Point to next element.
   }
}

Result


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