Module: Pointers

Problem

1/1

Index – this is a variable that can store the address of any variable of the given type.

Announcement:

char *pC; // address of a character or array element
int *pI; // address of an integer variable

How to assign an address:

int m = 25, *pI;
pI = &m; // address of variable m

Displaying a value through a pointer:

cout<<*pI;

Since the array variable points to the first element of the array,

int A[] = {5 , 10}, *pI;
pI = A;

will be similar:

int A[] = {5 , 10}, *pI;
pI = &A[0];

to move to the address of the next array element, just do:

pi++;

Given the string "12345abcd". Create a pointer such that index zero points to the last character.

#	Input	Output
1	0	d
2	-8	1

C++

1	#include <iostream>
2	using namespace std;
3	main()
4	{
5	int i;
6	char s[] = "12345abcd";
7	cin>>i;
8	// создать указатель для строки - pC
9	cout<<pC[i];
10	}