PROGRAM 107

Object

Write a program that passes an array to a function using pointers.

Algorithm

1. Declare a function void display(int *, int) that accepts an integer pointer and an integer as arguments and returns no value.
   The Function main
2. Declare integer array array that contains 5 elements.
3. Declare integer variable i and integer pointer j.
4. Set j = &array[0].
5. Repeat FOR i = 0 to 4 by 1
   • Read array[i].   (i.e., store input value in array at location i)
   • [End of FOR loop.]
6. Call the function display(j, i) considering j and i as actual arguments.
7. Exit.
   Defining the Function void display(int *j, int len)
   where *j and len are the formal arguments
8. Declare integer variable i.
9. Repeat FOR i = 0 to (len-1) by 1
   • Write the value at address j (i.e., *j).
     • j++.
   • i++.
   • [End of FOR loop.]
10. Exit.

Flowchart

C++ Source Code

// program 107
#include<iostream>
using namespace std;

void display(int *, int);

int main()
{
  int array[5];
  int i, *j;

  j = &array[0];
  for (i = 0; i < 5; i++)
  {
    cout << "Enter any number for position " << i << ": ";
    cin >> array[i];
  }
  display(j, i);

  return 0;
}

void display(int *j, int len)
{
  system("cls");
  int i;
  for (i = 0; i < len; i++)
  {
    cout << "\nElement at position " << i << " is: " << *j;
    j++;
  }
}

C Source Code

/*program 107*/
#include<stdio.h>
#include<stdlib.h>

void display(int *, int);

int main()
{
  int array[5];
  int i, *j;

  j = &array[0];
  for(i=0; i<5; i++)
     {
     printf("Enter any number for position %d: ", i);
     scanf("%d", &array[i]);
     }
  display(j, i);
  
  return 0;
}

void display(int *j, int len)
{
  system("cls");
  int i;
  for(i=0; i<len; i++)
     {
     printf("\nElement at position %d is: %d", i, *j);
     j++;
     }
}

Output

Element at position 0 is: 24
Element at position 1 is: 67
Element at position 2 is: 93
Element at position 3 is: 23
Element at position 4 is: 76