Summary  
This chapter covers pointer arithmetic in code, demonstrating how to navigate and manipulate memory addresses by incrementing, decrementing, adding, and subtracting pointers.  

General domain of usage  
Array and buffer processing

#define CATCH_CONFIG_MAIN
#include <catch2/catch.hpp>

int getValueByPointerOffset(int* p_start, int* p_target);

TEST_CASE("Start=10, Target=20 should return 20", "[getValueByPointerOffset]") {
    int firstVariable = 10;
    int secondVariable = 20;

    int result = getValueByPointerOffset(&firstVariable, &secondVariable);
    int expected = 20;

    REQUIRE(result == expected);
}

TEST_CASE("Start=5, Target=15 should return 15", "[getValueByPointerOffset]") {
    int firstVariable = 5;
    int secondVariable = 15;

    int result = getValueByPointerOffset(&firstVariable, &secondVariable);
    int expected = 15;

    REQUIRE(result == expected);
}

TEST_CASE("Start=-10, Target=0 should return 0", "[getValueByPointerOffset]") {
    int firstVariable = -10;
    int secondVariable = 0;

    int result = getValueByPointerOffset(&firstVariable, &secondVariable);
    int expected = 0;

    REQUIRE(result == expected);
}

TEST_CASE("Start=100, Target=50 should return 50", "[getValueByPointerOffset]") {
    int firstVariable = 100;
    int secondVariable = 50;

    int result = getValueByPointerOffset(&firstVariable, &secondVariable);
    int expected = 50;

    REQUIRE(result == expected);
}

TEST_CASE("Start=0, Target=0 should return 0", "[getValueByPointerOffset]") {
    int firstVariable = 0;
    int secondVariable = 0;

    int result = getValueByPointerOffset(&firstVariable, &secondVariable);
    int expected = 0;

    REQUIRE(result == expected);
}

test.cpp

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Learn the basics of pointers in a simple, not overwhelming manner! Explore how pointers work, their syntax, and practical applications through clear examples and easy-to-follow explanations.

Explore how pointers, which store memory addresses, can be manipulated using arithmetic operations. Learn to navigate through memory locations, access data structures efficiently, and optimize code for performance.

Explore the concept of references as aliases for variables and memory-efficient access to data. Learn how references contribute to cleaner code, improved readability, and enhanced performance by avoiding unnecessary data duplication.

Uncover the principles and techniques behind allocating and deallocating memory dynamically during program execution. Understand the advantages and challenges of dynamic memory allocation.

Challenge: Pointer Arithmetic

Solution

Challenge: Pointer Arithmetic

Solution