Write a C++ program to demonstrate pointer of array.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | #include <iostream> using namespace std; int main() { int ptr1[5]; // integer array declaration int *ptr2[5]; // integer array of pointer declaration cout << "Enter five numbers :" << endl; for(int i = 0; i < 5; i++) { cin >> ptr1[i]; } for(int i = 0; i < 5; i++) { ptr2[i] = &ptr1[i]; } // printing the values of ptr1 array cout << "The values are:" << endl; for(int i = 0; i < 5; i++) { cout << *ptr2[i] << endl; } return 0; } |
Output
Enter five numbers :
9
8
7
6
5
The values are:
9
8
7
6
5
Write a C++ program to demonstrate pointer of array with user define functions.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | #include <iostream> using namespace std; void readValues(int ptr1[], int size) { cout << "Enter " << size << " numbers :" << endl; for(int i = 0; i < size; i++) { cin >> ptr1[i]; } } void initializePointerArray(int *ptr2[], int ptr1[], int size) { for(int i = 0; i < size; i++) { ptr2[i] = &ptr1[i]; } } void printValues(int *ptr2[], int size) { cout << "The values are:" << endl; for(int i = 0; i < size; i++) { cout << *ptr2[i] << endl; } } int main() { const int size = 5; int ptr1[size]; // integer array declaration int *ptr2[size]; // integer array of pointer declaration readValues(ptr1, size); initializePointerArray(ptr2, ptr1, size); printValues(ptr2, size); return 0; } |
Output
Enter 5 numbers :
5
8
9
7
3
The values are:
5
8
9
7
3