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C++ Pointers and References
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C++ Pointers and References

C++ Pointers and References

1. Pointers Fundamentals
Introduction to PointerAssigning Addresses to PointersLink Between Pointer and VariablePointers Use Cases
2. Pointer Arithmetic
Introduction to Pointer ArithmeticPointer Arithmetic PracticeArrays and Pointers ConnectionArray Pointer Arithmetic Practice
3. References Fundamentals
Introduction to ReferencesReference Use CasesRvalue and Lvalue ReferencesReference vs Pointers
4. Dynamic Memory Allocation
Introduction to MemoryDynamic AllocationDynamic Allocation of the ArrayPointer to Pointer Dynamic AllocationSummary and Overview

bookIntroduction to Pointer Arithmetic

Moving Pointers

You can use arithmetic operators like addition (+) and subtraction (-) with pointers to navigate through memory locations. When a pointer is pointing to an int, increasing its value will move it forward by the size of an integer.

The size of the data type to which the pointer points determines the step size of the arithmetic operation. You can experiment with different data types.

cpp

main

copy

              
12345678910

            
#include <iostream>

int main() 
{
    int variable = 10;
    int *pointer = &variable;

    std::cout << pointer << std::endl;
    std::cout << pointer + 1 << std::endl;
}

Pitfalls and Memory Safety

Performing multiplication or division directly on pointers will result in an error. Additionally, using float numbers with pointers is generally not meaningful and can lead to unexpected behavior.

Be caution

Accessing memory beyond the allocated bounds, often due to incorrect pointer arithmetic, can lead to serious issues such as crashes and security vulnerabilities.

What is the purpose of using arithmetic operators with pointers?

What is the purpose of using arithmetic operators with pointers?

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Seção 2. Capítulo 1
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