How Apps Add More Items in C++ | Fill an Array Step by Step
In this lesson, we write a C++ program that fills an array by asking the user to insert numbers one by one.
After each number, the program asks the user if she/he wants to add another element or stop. If the user chooses yes, the program asks for another number. If the user chooses no, the program stops taking input, then displays the array length and all array elements.
For example,
Output:
Please Insert a Number? 10
Do You Want To Add More Elements? [0]:No, [1]:yes? 1
Please Insert a Number? 20
Do You Want To Add More Elements? [0]:No, [1]:yes? 1
Please Insert a Number? 40
Do You Want To Add More Elements? [0]:No, [1]:yes? 0
The Array Length is: 3
The Array Elements are: 10 20 40
In this video, you will learn:
• How to fill an array from user input in C++
• How to ask the user if she/he wants to continue
• How to keep adding elements step by step
• How to stop input based on the user’s choice
• How to track the real length of the array
• How to display the final array elements
• How this logic is used in apps and websites when users add products, files, pictures, or other entries
• How to think like a programmer when building dynamic user-driven data
This lesson is a very important beginner-friendly introduction to arrays, loops, conditions, and user input in C++.
It also shows how re-usability and extendability work in programming, because we keep asking for values until the user decides to stop, then we use the saved values and the final array length in the program.
If you are learning C++ problem solving step by step, this lesson will help you understand arrays, input handling, loop control, and how real applications collect data from users gradually.
This lesson 34 of Course 4: Problem Solving for Programmers Using C++ (Part 2) – Beginner Track.
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