Chapter 7: Pointers

 Pointers are a powerful feature in C programming that allow direct manipulation of memory addresses. In this chapter, we'll dive into pointers and understand their concept and usage. You'll learn how to declare and initialize pointers, access memory addresses, and dereference pointers to work with the values they point to. Real-world examples will illustrate the practical applications of pointers, including dynamic memory allocation and passing values by reference.

Example:

#include <stdio.h> int main() { int number = 10; int* ptr; // Declare a pointer variable ptr = &number; // Assign the address of 'number' to the pointer printf("Value of number: %d\n", number); printf("Address of number: %p\n", &number); printf("Value of pointer: %p\n", ptr); printf("Value pointed by pointer: %d\n", *ptr); return 0; }

Explanation:

We declare an integer variable called number and a pointer variable called ptr. We assign the address of number to the pointer using the address-of operator (&). Using printf(), we display the value of number, the address of number, the value stored in the pointer, and the value pointed by the pointer.

To compile and run the program, follow the same steps as in the previous chapters.

In the next chapter, we'll explore strings, which are an essential part of many C programs.