How to Pass an Array Pointer as a Function Argument in C++? Last Updated : 06 Feb, 2024 Summarize Comments Improve Suggest changes Share Like Article Like Report In C++, a common situation arises where we have to pass an array to a function to perform some processing. This can be done by passing an array pointer as a function argument. In this article, we will learn how to pass an array pointer as a function argument in C++. Passing Array Pointer to Function in C++For passing an array to a function, we can simply pass the array pointer (that stores the memory address of the first element) along with the size of an array to the function as an argument. This approach can also be used for dynamic arrays because when we pass an array as a parameter to a function it decays into a pointer to the first element of the array and we will lose the information about its size. C++ Program for Passing Array Pointer to FunctionThe below example demonstrates the passing of an array pointer as a function argument. C++ // C++ program to pass an array pointer as a function // argument. #include <iostream> using namespace std; // Function to print array elements void printArray(int* arr, int size) { for (int i = 0; i < size; ++i) { cout << arr[i] << " "; } } int main() { int numbers[] = { 1, 2, 3, 4, 5 }; int size = sizeof(numbers) / sizeof(numbers[0]); // Passing array pointer to the function printArray(numbers, size); return 0; } Output1 2 3 4 5 Explanation: In the above example numbers array is created and it is passed as an array pointer along with its size to a function named printArray()that prints all the array elements. Note: In C++, by default when passing the entire array to a function, pointer to its first element is passed. Comment More infoAdvertise with us Next Article How to Pass an Array Pointer as a Function Argument in C++? S sourabhcao9e0 Follow Improve Article Tags : C++ Programs C++ cpp-array CPP-Functions CPP Examples +1 More Practice Tags : CPP Similar Reads C++ Programming Language C++ is a computer programming language developed by Bjarne Stroustrup as an extension of the C language. It is known for is fast speed, low level memory management and is often taught as first programming language. It provides:Hands-on application of different programming concepts.Similar syntax to 5 min read Non-linear Components In electrical circuits, Non-linear Components are electronic devices that need an external power source to operate actively. Non-Linear Components are those that are changed with respect to the voltage and current. Elements that do not follow ohm's law are called Non-linear Components. Non-linear Co 11 min read Spring Boot Tutorial Spring Boot is a Java framework that makes it easier to create and run Java applications. It simplifies the configuration and setup process, allowing developers to focus more on writing code for their applications. This Spring Boot Tutorial is a comprehensive guide that covers both basic and advance 10 min read Object Oriented Programming in C++ Object Oriented Programming - As the name suggests uses objects in programming. Object-oriented programming aims to implement real-world entities like inheritance, hiding, polymorphism, etc. in programming. The main aim of OOP is to bind together the data and the functions that operate on them so th 5 min read Class Diagram | Unified Modeling Language (UML) A UML class diagram is a visual tool that represents the structure of a system by showing its classes, attributes, methods, and the relationships between them. It helps everyone involved in a projectâlike developers and designersâunderstand how the system is organized and how its components interact 12 min read Backpropagation in Neural Network Back Propagation is also known as "Backward Propagation of Errors" is a method used to train neural network . Its goal is to reduce the difference between the modelâs predicted output and the actual output by adjusting the weights and biases in the network.It works iteratively to adjust weights and 9 min read 3-Phase Inverter An inverter is a fundamental electrical device designed primarily for the conversion of direct current into alternating current . This versatile device , also known as a variable frequency drive , plays a vital role in a wide range of applications , including variable frequency drives and high power 13 min read 30 OOPs Interview Questions and Answers [2025 Updated] Object-oriented programming, or OOPs, is a programming paradigm that implements the concept of objects in the program. It aims to provide an easier solution to real-world problems by implementing real-world entities such as inheritance, abstraction, polymorphism, etc. in programming. OOPs concept is 15 min read Polymorphism in Java Polymorphism in Java is one of the core concepts in object-oriented programming (OOP) that allows objects to behave differently based on their specific class type. The word polymorphism means having many forms, and it comes from the Greek words poly (many) and morph (forms), this means one entity ca 7 min read CTE in SQL In SQL, a Common Table Expression (CTE) is an essential tool for simplifying complex queries and making them more readable. By defining temporary result sets that can be referenced multiple times, a CTE in SQL allows developers to break down complicated logic into manageable parts. CTEs help with hi 6 min read Like